Case of the Month

University of California, Davis

Listed by site and type with diagnosis.

Sorted by chronological order  Sorted without diagnosis  Show the codes in a separate window

Type  Code

C-            Congenital malformation

D-           Neurodegenerative disease

F-            Forensic, intoxication, iatrogenic, & medication related

G-           Genetic and/or metabolic

I-             Infection, inflammation, & demyelination

TC-          Neoplastic & non-neoplastic cyst (grossly cystic)

TH-         Neoplasm, hematopoietic, histiocytic, & dendritic

TM-        Metastasis

TN-         Neoplasm & solid tumor-like lesions

TS-          Hyperplasia, dysplasia, in situ neoplasm

U-           Unclassified or mixed

(P)-         Pediatric & perinatal

(C)-         Cytology

Site	Type	Number	Clinical information	Diagnosis
A1	U	UCD-2019-10	A 22-year-old woman with a history of chronic abdominal pain, nausea, and gastroesophageal reflux disease underwent esophagogastroduodenoscopy to reveal diffuse white patches of esophageal epithelium with associated epithelial sloughing.	Esophagitis dissecans superficialis (sloughing esophagitis).
A2	F	UCD-2014-08	The patient is a 57-year-old male with a history of atrial fibrillation on coumadin, chronic obstructive pulmonary disease, hypertension, gout, and alcohol abuse who presented with a three day history of melena.	Gastric mucosa with features consistent with colchicine toxicity.
A2	I(P)	UCD-2017-06	Patient is 10-year-old female with profound iron deficiency anemia.	Collagenous gastritis.
A2	TM	UCD-2010-04	A 79-year-old man with a history of Barrett’s esophagus.	Metastatic melanoma, esophagus.
A2	TN	UCD-2013-01	A 63-year-old female with a past medical history of gastrointestinal bleeding from a gastric ulcer and H. pylori infection presented with new complaints of melena, progressive weakness, fatigue and shortness of breath.	Epithelioid gastrointestinal stromal tumor (GIST), stomach.
A2	TN	UCD-2013-12	A 50-year-old female with a past medical history of fibromyalgia, chronic pain, and 25 pack year smoking history, who presented to the ED at an outside hospital one year ago with severe left upper quadrant pain without fever, chills, anorexia, nausea, vomiting, diarrhea, constipation, or back pain. She additionally had a 40 lb weight loss (unintentional) over the prior 8 months.	Gastrointestinal stromal tumor (GIST), epithelioid type, stomach.
A2	TN	UCD-2016-11	The patient is a 70 year old Caucasian male, who is transferred from an outside institution with complains of increasing black stools, fatigue, nausea and vomiting and vague upper abdominal pain.	Lymphoepithelioma-like carcinoma associated with Epstein-Barr virus, stomach.
A3	I	UCD-2013-06	The patient is a 55 year old male with a past medical history significant for hypertension and osteoarthritis who presented with a 3 to 4 month history of alternating diarrhea with steatorrhea and constipation. He also noted fevers and an unintentional 40 lbs weight loss.	Whipple disease, duodenum.
A3	TN	UCD-2018-03	The patient is a 64-year-old woman who presented to an outside gastroenterologist for evaluation of dysphagia.	Gangliocytic paraganglioma of esophagus.
A4	G	UCD-2015-03	A 53-year-old male with history of neurofibromatosis type 1 (NF-1) presented to the ED with a 3-week history of abdominal pain.	Small bowel adenocarcinoma, moderately to poorly differentiated, gastrointestinal ganglioneuromatosis, neurofibromatosis type 1 (NF-1)  vasculopathy, gastrointestinal stromal tumor (GIST).
A4	I	UCD-2018-08	A 24-year-old homeless man presented with five months of progressive diarrhea which worsened in the past 2 months.	Mycobacterium avium-intracellulare (MAC) enterocolitis.
A4	TM	UCD-2016-02	A 38-year-old man was transferred from outside facility for evaluation and management of an intra-abdominal mass.	Metastatic melanoma, small bowel.
A4	TN	UCD-2015-03	A 53-year-old male with history of neurofibromatosis type 1 (NF-1) presented to the ED with a 3-week history of abdominal pain.	Small bowel adenocarcinoma, moderately to poorly differentiated, gastrointestinal ganglioneuromatosis, neurofibromatosis type 1 (NF-1)  vasculopathy, gastrointestinal stromal tumor (GIST).
A4	U	UCD-2013-04	The decedent was a 33 year old male with a prior history of illicit drug use who complained of vague abdominal pain 1 week prior to death.	Incomplete intestinal rotation with internal herniation, small intestine.
A5	I	UCD-2018-11	A 34-year-old woman presented with a history of acute abdominal pain, nausea, and non-bilious, non-bloody vomiting. She had a history of lupus nephritis for which she was treated with peritoneal dialysis as an outpatient.	Gangrenous and perforated appendix associated with sevelamer deposition.
A5	TN	UCD-2012-06	A 64 year-old female with a past medical history of cervical cancer s/p vaginal hysterectomy, hemorrhagic cyst s/p right oopherectomy, hypertension, and recurrent pulmonary emboli. She presented with abdominal pain for two weeks. Computed tomography (CT) showed a multi-cystic pelvic mass.	Appendix: Goblet cell carcinoid. Ovary: Mixed epithelial carcinoma.
A5	TN	UCD-2018-10	Patient is a 37-year-old G5P2032 with no significant past medical history who presents with severe abdominal pain. CT abdominal and pelvis reveal bilateral ovarian masses with central necrosis in addition to moderate ascites and nodularity.	Signet ring cell carcinoma of appendix with metastasis to bilateral ovaries.
A5	TN	UCD-2019-09	A 65-year-old man presented with one week of non-radiating right lower quadrant abdominal pain associated with nausea, vomiting, and anorexia.	Low-grade appendiceal goblet cell adenocarcinoma (formerly typical goblet cell carcinoid), appendix.
A5	U	UCD-2018-11	A 34-year-old woman presented with a history of acute abdominal pain, nausea, and non-bilious, non-bloody vomiting. She had a history of lupus nephritis for which she was treated with peritoneal dialysis as an outpatient.	Gangrenous and perforated appendix associated with Sevelamer deposition.
A6	F	UCD-2014-01	The decedent is a 57-year-old female with a history of papillary serous ovarian cancer (stage IIIc) who underwent a radical hysterectomy and debulking of her primary tumor followed by six cycles of intraperitoneal chemotherapy.	Radiation injury in the rectum related to the treatment for ovarian carcinoma.
A6	TN	UCD-2012-03	A 63-year-old female presents with worsening abdominal pain, distention, nausea and progressively fewer and smaller bowel movements.	Metastatic adenocarcinoma consistent with lung primary, colon.
A6	TN	UCD-2016-04	The patient is a 65-year-old woman with a history of hypothyroidism, colonic tubular adenomas, and new onset hematochezia.	Combined neuroendocrine carcinoma (G3) and tubulovillous adenoma.
A6	TN	UCD-2018-05	A 69-year-old female with a history of cecal tubular adenoma and tubulovillous adenomas and a family history of colon cancer presented for a repeat colonoscopy.	Composite intestinal adenoma-microcarcinoid.
B0	TN	UCD-2015-12	A 20-year-old man presented with a 1 year history of slowly progressive left sided proptosis.	Cemento-ossifying fibroma, roof of orbital dipole.
B0	TN	UCD-2016-01	A 69-year-old female returns for follow up regarding her lobular carcinoma in situ (LCIS).	Lobular carcinoma in situ with comedo necrosis.
B0	TN(P)	UCD-2012-02	A 16-year-old girl with no significant past medical history presented with a tender right breast lump.	Alveolar rhabdomyosarcoma of the breast with metastasis to the bone.
E0	TN	UCD-2015-07	The patient is a 64-year-old female with an unremarkable past medical history who presented for evaluation of a slow growing swelling on the floor of her mouth.	Lymphoepithelial carcinoma, EBER-ISH negative, submandibular gland.
E0	TN	UCD-2018-12	A 66-year-old male presented with a right neck mass.  Ultrasound of his neck revealed an 18 mm slightly irregular hypoechoic mass in the submandibular gland.	Adenoid Cystic Carcinoma with solid pattern predominance, submandibular mass.
E0	TN	UCD-2019-11	A 44-year-old male presents with a two-year history of swelling in the right jaw, which was previously treated with hot compresses and antibiotics with some immediate improvement.	Mammary analogue secretory carcinoma (aka. Secretory carcinoma), parotid gland.
E0	TN	UCD-2020-05	The patient is a 50-year-old male who presented with facial swelling near the region of the right parotid gland for several months.	Lymphoepithelial carcinoma of parotid gland.
E0	TN(C)	UCD-2010-07	A 34-year-old male with no significant past medical history who presented with right painful lump, behind right ear for 2.5 months.	Epithelial-myoepithelial carcinoma.
F1	TN	UCD-2012-08	A 44 year-old pravida 2, para 2 woman with a seven-year history of a pedunculated vulvar mass.	Angiomyofibroblastoma, vulva.
F3	TN	UCD-2012-04	A 40-year-old Asian female status post right ovarian cystectomy and left salpingo-oophorectomy for seromucinous cystadenoma of the right ovary and mixed endometrioid and mucinous tumor of low malignant potential of the left ovary.	Adenoma malignum (minimally deviated adenocarcinoma)
F4	G	UCD-2010-02	The patient is a nulligravida 47-year-old female with Turner’s Syndrome who presented with a 10 month history of irregular vaginal bleeding.	Mesonephric adenocarcinoma.
F4	TN	UCD-2010-01	An 80 year-old woman who presented with a three month history of multiple urinary tract infections and one day of gross hematuria.	Carcinosarcoma (Malignant Mixed Müllerian  Tumor, MMMT), uterus.
F4	TN	UCD-2010-02	The patient is a nulligravida 47-year-old female with Turner’s Syndrome who presented with a 10 month history of irregular vaginal bleeding.	Mesonephric adenocarcinoma.
F4	TN	UCD-2011-01	A 22 year-old woman with a 10 year history of menorrhagia.	Low grade adenosarcoma, uterus.
F4	TN	UCD-2011-08	A 39 year-old female with a 5-month history of persistent abdominal pain and cramping. A colonoscopy was performed and found no abnormalities.	Uterine endometrioid adenocarcinoma with synchronous ovarian endometrioid adenocarcinoma in the setting of Lynch syndrome.
F4	TN	UCD-2012-09	A 37 year-old nulligravida female with a history of abnormal menstruation and more recently, episodes of severe lower abdominal cramping and copious vaginal bleeding.	Carcinosarcoma (malignant mixed müllerian tumor, uterus.
F4	TN	UCD-2014-02	The patient, a 91-year-old female, presented with a 6 month history of vaginal bleeding and mild abdominal discomfort.	Carcinosarcoma, uterus.
F4	TN	UCD-2016-07	A 46-year-old G2P2 female presented with bleeding and cramping pelvic pain that had gradually gotten worse. She complained of spotting in between her periods with clotting every six months.	Low grade endometrial stromal sarcoma and endometrial adenocarcinoma, endometroid type.
F4	TN	UCD-2018-01	A 77-year-old G4P4004 female presented for evaluation of post menopausal bleeding for the past one month.	Carcinosarcoma (Malignant Mixed Müllerian  Tumor, MMMT), uterus.
F6	G	UCD-2011-08	A 39 year-old female with a 5-month history of persistent abdominal pain and cramping. A colonoscopy was performed and found no abnormalities.	Uterine endometrioid adenocarcinoma with synchronous ovarian endometrioid adenocarcinoma in the setting of Lynch syndrome.
F6	G	UCD-2019-07	Patient is a 71-year-old woman with persistent lower left quadrant pain and a CT scan that showed a solid 4 cm right ovarian mass.	Fibroma, bilateral ovaries, associated with Gorlin syndrome (nevoid basal cell carcinoma syndrome).
F6	TM	UCD-2010-03	A 37-year-old female with a two to three month history of abdominal pain, burning on urination, occasional fevers, weight loss of 10 lbs. and amenorrhea for a period of 6 months.	Metastatic adrenal cortical carcinoma, ovary.
F6	TN	UCD-2011-07	A 54 year-old woman with a history of melanoma of the right leg and a left adnexal mass that was found on CT when the patient presented to the ED with abdominal pain.	Mixed carcinoid andglobet cell tumor arising in a mature teratoma, ovary.
F6	TN	UCD-2011-08	A 39 year-old female with a 5-month history of persistent abdominal pain and cramping. A colonoscopy was performed and found no abnormalities.	Uterine endometrioid adenocarcinoma with synchronous ovarian endometrioid adenocarcinoma in the setting of Lynch syndrome.
F6	TN	UCD-2012-06	A 64 year-old female with a past medical history of cervical cancer s/p vaginal hysterectomy, hemorrhagic cyst s/p right oopherectomy, hypertension, and recurrent pulmonary emboli. She presented with abdominal pain for two weeks. Computed tomography (CT) showed a multi-cystic pelvic mass.	Appendix: Goblet cell carcinoid. Ovary: Mixed epithelial carcinoma.
F6	TN	UCD-2012-12	A 55-year-old para 1 female who presented with abdominal pain and a palpable mass.	Transitional cell carcinoma, ovary.
F6	TN	UCD-2014-05	An 83-year-old female G2P2 with a past medical history of hypertension, hyperlipidemia, hypothyroidism and enterococcus endocarditis in 2013 presented in February 2014 with mid-abdominal pains.	Müllerian  carcinoma, high-grade, ovary.
F6	TN	UCD-2018-10	Patient is a 37-year-old G5P2032 with no significant past medical history who presents with severe abdominal pain. CT abdominal and pelvis reveal bilateral ovarian masses with central necrosis in addition to moderate ascites and nodularity.	Signet ring cell carcinoma of appendix with metastasis to bilateral ovaries.
F6	TN	UCD-2019-07	Patient is a 71-year-old woman with persistent lower left quadrant pain and a CT scan that showed a solid 4 cm right ovarian mass.	Fibroma, bilateral ovaries, associated with Gorlin syndrome (nevoid basal cell carcinoma syndrome).
F6	TN(P)	UCD-2014-04	A 2-year-old female with no significant past medical history presented to her primary care physician six months prior with complaint of dysuria, she was placed on empiric antibiotics, urine cultures were found to be negative and she was sent home with resolution.	Malignant mixed germ cell tumor.
F7	U	UCD-2019-02	A 29-year-old G5P2022 presented for repeat cesarean section at 38 weeks gestation. The pregnancy was a twin gestation complicated by intrauterine fetal demise of one twin at 11 weeks gestation. Subsequent chorionic villous sampling of both twins showed a normal 46 XX karyotype in the living twin and a 69 XXX genotype in the demised twin.	Fetus papyraceus.
G1	TN	UCD-2011-04	A 38 year-old male with a history of a left testicular varicocele and a chief complaint of infertility for four years.	Leydig cell tumor, testis.
G2	TN	UCD-2020-04	A 77-year-old male presented to the hospital with gross hematuria.	Ductal adenocarcinoma of prostate.
H0	TH	UCD-2017-02	A 52-year-old man presented with progressive eosinophilia for two years.	Chronic eosinophilic leukemis, NOS with t(5;12) (q31;p13)/ETV6-ACSL6 genefusion: a novel variant of myeloid neoplasm with eosinophilia.
H0	TH	UCD-2017-07	This patient is a 21-year-old female who initially presented with epistaxis, severe back pain and fatigue	B-acute lymphocytic leukemia (B-ALL).
H0	TH	UCD-2017-12	A 33-year-old woman presented with heavy vaginal bleeding with large clots lasting for more than two weeks.	A promyelocytic leukemia.
H0	TH	UCD-2018-09	A previously healthy adolescent male presents with one week of jaundice and abdominal pain. Radiology imaging reveals an obstructing mass at the pancreatic head.	Myeloid sarcoma, head of pancreas.
H0	TN	UCD-2011-02	A 66 year-old female with a past medical history of hypertension, atrial fibrillation and congestive heart failure who underwent a computed tomography (CT) scan of the abdomen to evaluate for an existing abdominal aneurysm.	Littoral cell angioma, spleen.
H0	TN	UCD-2014-07	The patient is a 35-year-old female with a medical history significant for hypothyroidism, depression, and asthma.	Histiocytic sarcoma, spleen.
H0	TN	UCD-2015-06	An 82-year-old man who presented with fever, diaphoresis, fatigue, dysphagia, lymphadenopathy and splenomegaly.	Dendritic cell sarcoma, lymph node.
H0	TN	UCD-2016-06	A 62-year-old female with a remote past medical history of hairy cell leukemia (HCL) presented to an outside hospital with progressively worsening headaches accompanied by short term memory loss, expressive aphasia, and lethargy.	Hairy cell leukemia and metastatic melanoma.
H0	TN	UCD-2019-08	Presentation: 25 year-old previously healthy male presented with fever, sore throat, night sweats and weight loss found to have leukocytosis.	Mixed phenotype acute leukemia (MPAL).
H0	TN(P)	UCD-2012-02	A 16-year-old girl with no significant past medical history presented with a tender right breast lump.	Alveolar rhabdomyosarcoma of the breast with metastasis to the bone.
H0	U	UCD-2013-10	A 28-year-old woman with no significant past medical history presented with a palpable left neck mass which had been slowly increasing in size for approximately one year and was not associated with pain or other symptoms.	Castleman disease, unifocal, hyaline-vascular type, neck mass.
H0	U	UCD-2014-09	The patient is a 24-year-old O RhD positive G2P1 female at full term in her pregnancy. Her history includes HbSC disease and she has had sickle cell pain crises episodically requiring transfusions. Fetal monitoring has been stable.	A red cell alloantibody with Hr/hrs red cell antigen specificity
H0	U	UCD-2015-02	A 30-year-old male with a history of Hodgkin lymphoma which was diagnosed 5 years ago. He received chemotherapy followed by an allogenic stem cell transplant in 2013.	Chronic graft-versus-host disease.
H0	U	UCD-2015-11	The patient is a 6-year-old boy who presented with 4 days of vomiting and bloody diarrhea.	Hemolytic uremic syndrome.
H0	U	UCD-2016-10	An 18-year old female with a history of asthma presented to the clinic with the primary complaint of bilateral knee pain (4-5/10) that is mostly associated with running.	Von Willebrand disease, type 2M.
H0	U(P)	UCD-2010-12	A 15-month-old female with a 1-week history of fever, fatigue, and maculopapular rash which had recently resolved.	Hemophagocytic lymphohistiocytosis, peripheral blood.
H0	U(P)	UCD-2017-03	A 13-year-old female with past medical history of Sickle cell disease (Hb SS disease) had multiple transfusions, iron overload, abnormal transcranial doppler (TCD), status post hematopoietic stem cell transplant (HSCT) complicated with GVHD in skin and lungs during transplant course, HHV6 reactivation, oral/labial HSV infection.	Reactive process.
J0	C(P)	UCD-2013-02	A newborn female infant born at 37 weeks gestation with a left –sided multicystic lung mass discovered at 25 weeks on ultrasound.	Congenital pulmonary airway malformation, type II.
J0	TM	UCD-2014-10	The decedent is a 55-year-old Caucasian male with a past medical history of diffusely metastatic carcinoma, severe chronic obstructive pulmonary disease (on 4 L home oxygen therapy), extensive smoking history, and asbestos exposure history.	Metastatic poorly differentiated squamous cell carcinoma of lung primary.
J0	TN	UCD-2009-08	A 63-year-old male who presented to the emergency room because of sharp chest pain radiating to the scapula.	Atypical mucous gland adenoma (MGA) of the bronchus, "Atypical bronchial gland adenoma", bronchus.
J0	TN	UCD-2010-05	A 33-year-old Caucasian female with no significant past medical history who presented with a chief complaint of progressive shortness of breath over a course of 3 months.	Malignant melanoma, primary lung.
J0	TN	UCD-2012-11	A 27 year-old male with a recent history of recurrent pneumonia (5 times over the past two years).	Clear cell adenocarcinoma, main bronchus.
J0	TN	UCD-2016-09	The patient is a 44-year-old Asian man with a three month history of worsening cough and painful deep inspiration.	Lymphoepithelioma-like carcinoma, lung.
K0	C	UCD-2013-08	A 22-year-old G1P0 female with an uncomplicated pregnancy history was at 31 weeks 6/7 days gestational age by last menstrual cycle when she presented to her OB clinic for routine screening.	Posterior urethral valves with subsequent Potter sequence.
K1	TH	UCD-2013-11	A 70-year-old woman with malaise, hot flashes, and 5-10 pound weight loss was found to have an elevated hematocrit of 46.	Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma), kidney.
K1	TN	UCD-2017-04	A 74-year-old man has a 1.5 year history of a right inferior pole renal mass seen incidentally on CT scan.	Mucinous tubular and spindle renal cell carcinoma.
K1	TN(P)	UCD-2017-09	A 5-week-old female presented with blood in her diaper.	Cellular congenital mesoblastic nephroma, kidney.
K2	TN	UCD-2019-12	The patient is an 85-year-old man with intermittent gross hematuria for the past few months. He reports intermittent symptoms of hesitancy and frequency.	Small cell neuroendocrine carcinoma of bladder.
K3	U	UCD-2020-01	A 24 year old Caucasian female with chronic kidney disease stage V had been on peritoneal dialysis for two years.	ASFA Category I (first-line therapy) and ASFA Grading Recommendations 1B (Strong recommendation, moderate-quality evidence)
L1	TN	UCD-2011-06	A 38 year-old male, with a past medical history significant only for gastroesophageal reflux disease, who presented with burning epigastric pain.	Epithelioid hemangioendothelioma, liver.
L1	TN	UCD-2017-01	The patient was a 66-year-old woman with a past medical history of chronic hepatitis B infection (for more than 30 years – asymptomatic), hypothyroidism, hyperlipidemia, and degenerative joint disease.	Angiomyolipoma, liver.
L1	TN(P)	UCD-2017-05	The patient was a 21-month-old, previously healthy girl who presented with abdominal distension, emesis, and irritability to an outside hospital. She was found to have a liver mass.	Hepatoblastoma, mixed epithelial and mesenchymal type.
L2	U	UCD-2019-04	The patient is an 80-year old woman who presented with sudden onset of sharp, constant pain in her epigastrium that radiates to her chest. An abdominal ultrasound performed a few months prior was notable for multiple calculi, diffuse wall thickening, and a 0.5 cm polyp in the gallbladder.	Adenomyomatosis, gallbladder.
L3	TH	UCD-2018-09	A previously healthy adolescent male presents with one week of jaundice and abdominal pain. Radiology imaging reveals an obstructing mass at the pancreatic head.	Myeloid sarcoma, head of pancreas.
L3	TH(C)	UCD-2018-02	A 78-year-old man with a history of biliary colic admitted to outside hospital in for gallstone pancreatitis.	Undifferentiated carcinoma with osteoclast-like giant cells, pancreas.
L3	TN(C)	UCD-2015-04	A 66-year-old female with a past medical history of peptic ulcer disease and a large pancreatic mass.	Anaplastic carcinoma, pancreas.
M0	TN	UCD-2019-05	The patient is a 32-year-old woman with a nine-month history of constitutional symptoms of ‘just not feeling good.’	Ganglioneuroma, retroperitoneal mass.
N0	I	UCD-2012-07	A 11-year-old girl with no significant past medical history who presented with a headache located behind the right eye, with radiation to bilateral temples.	Neurocysticercosis, brain.
N0	TH	UCD-2016-08	The patient is a young adult with a history of systemic lupus erythematosus (SLE) complicated by class IV-V lupus nephritis requiring prolonged immunosuppression on a multi-drug regimen. New onset headaches, confusion, and behavioral changes prompted evaluation by neurology.	Immunosuppression-related B cell lymphoproliferative disorder, CNS.
N0	TN	UCD-2011-03	A 30 year-old female from Sudan with no significant past medical history who presents with an incidental finding of persistent mildly elevated liver function tests and microcytic anemia.	Glioblastoma, WHO grade IV, IDH wild-type.
N0	TN	UCD-2019-03	A 43-year-old female presented to the emergency department with a seizure.  She has history of alcoholism and seizures attributed to alcohol withdrawal.	Glioblastoma, WHO grade IV, IDH wild-type.
N1	G	UCD-2015-05	A 17-year-old female with past medical history of Anomalous Pulmonary Venus	Skeletal muscle with myopathic features consistent with centronuclear myopathy.
O0	TN	UCD-2012-01	A 53-year-old Caucasian male with a past medical history significant for hypertension.	Choroidal melanoma with metastasis to the liver.
P0	TH(C)	UCD-2015-08	A 74-year-old woman underwent living donor kidney transplantation for chronic kidney disease. She developed small bowel obstruction and pleural effusion.	Post transplant lymphoproliferative disorder (PTLD), diffuse large B-cell lymphoma type, EBV negative, pleural effusion.
P0	TH(C)	UCD-2020-03	A middle-aged patient with a history of HIV and poor adherence to antiretroviral therapy (HAART) presented to an outside institution with 1-week history of abdominal pain, nausea, and constipation.	Burkitt lymphoma, 29 cm mesenteric mass.
P0	TN	UCD-2012-05	A 86 year old male with a past medical history significant for diabetes mellitus and hypertension who was incidentally found to have a left lung mass discovered on chest radiographs (during work-up for dull chest pain).	Solitary fibrous tumor, pleura.
P0	TN(C)	UCD-2017-11	The patient is a 68 years old female, presented with shortness of breath and lower extremity swelling. She reports a significant abdominal distension, early satiety and small caliber bowel movements for the past 2 weeks.	Primary peritoneal carcinoma.
R0	TN	UCD-2011-12	A 64-year-old female, with a past medical history significant for chronic obstructive pulmonary disease, diabetes mellitus, and hypertension, who was found to have a right adrenal mass on chest CT (during work-up for pneumonia).	Myelolipoma, adrenal.
R0	TN	UCD-2019-01	A 72-year-old man presented to the emergency department with a chief complaint of abdominal pain, vomiting, poor appetite and weight loss. CT demonstrated thickening of the duodenum and a right adrenal mass.	Ganglioneuroma and pheochromocytoma.
S0	TM	UCD-2013-03	A 75 year old male who presented with dysphagia and epigastric discomfort.	Metastatic carcinoma, consistent with esophageal adenocarcinoma, soft tissue of right thigh.
S0	TN	UCD-2009-09	A 57-year-old male who noted a “pop” in his right thigh while doing heavy labor activities.	Angiosarcoma, soft tissue.
S0	TN	UCD-2013-09	The patient is a healthy 80-year-old male with a large, right, painless scrotal swelling that has progressed in size slowly for many years.	Well-differentiated lipoma-like, liposarcoma, paratesticular soft tissue.
S0	TN	UCD-2014-03	The patient is a 47-year-old male with no significant past medical history who presented with a palpable mass of several years in the anterior and lateral aspects of the left lower leg.	Synovial sarcoma, monophasic type.
S0	TN	UCD-2015-09	A 20-year-old female with history of Systemic Lupus Erythematosus (SLE) and lupus nephritis causing renal failure for which she is on hemodialysis. She was on chronic immunosuppression and subsequently developed a left thigh nodule and numerous lung nodules.	Alveolar soft part sarcoma, soft tissue.
S0	U	UCD-2011-09	A 2-year-old boy with a soft tissue mass in the thenar eminence of the hand. MRI showed an amorphous area of enhancing soft tissue in the thenar eminence and a suggestion of increased soft tissue between the radial metacarpals.	Fibrous hamartoma of infancy, subcutaneous soft tissue.
T0	TH	UCD-2015-01	The patient is a 43-year-old woman with an incidental nodular thyroid.	Hyalinizing trabecular adenoma.
T0	TN	UCD-2010-08	A 68 year-old man who initially presented with pancreatitis and was incidentally found to have hypercalcemia due to hyperparathyroidism.	Medullary thyroid carcinoma.
T0	TN	UCD-2017-08	The patient is a newborn baby boy delivered at 37 weeks with a large 9 cm multicystic mass overlying his neck that significantly impaired his respiratory efforts.	Immature cystic teratoma, thyroid.
T0	TN	UCD-2018-04	The patient is a 69-year old woman who presented with a longstanding, recently enlarging left thyroid nodule.	Poorly differentiated thyroid carcinoma.
T1	TN	UCD-2019-06	A 72-year-old female had history of a thyroid mass discovered by her PCP on routine exam.	Thyroid neoplasm with mixed features of hyalinizing hyalinizing trabecular thyroid tumor, non-invasive follicular thyroid neoplasm, and papillary thyroid carcinoma.
W0	TN	UCD-2010-09	A 31-year-old female with a prior history of a myelomeningocele who was noted to have a new cystic structure within the pelvis/sacrum region at the time of a C-section.	Low grade neuroendocrine carcinoma within a sacrococcygeal teratoma, sacrum.
W0	TN	UCD-2013-07	A 3-year-old boy presented with an enlarging mass in front of his ear.	Langerhans histiocytosis, temporal bone.
W0	TN	UCD-2020-06	The patient is a 55-year-old man with chest pain and dyspnea after a ground-level fall.	Phosphaturic mesenchymal tumor of bone.
W0	TN(P)	UCD-2010-10	A 9-year-old boy with no past medical history who had a right flank mass which had been growing over several months.	Chondrosarcoma, WHO grade I, pelvis.
W0	U(P)	UCD-2018-07	A 17-year-old female presented with right femur fracture and underwent intermedullary nailing and open reduction internal fixation.	Gorham-Stout Syndrome (Vanishing Bone Disease).
X0	I(P)	UCD-2018-06	A fully vaccinated 14-year-old girl with no significant medical history presented to our institution with a history of progressive decline. Ten days prior to admission, she experienced vague abdominal pain, followed by a sore throat. She developed chest pain, and after experiencing a fall, was found to have altered mental status with speech difficulties.	Corynebacterium spp.
Z0	I	UCD-2020-02	This is a 69-year-old South Asian female who presented with a rash of one month’s duration, long-standing neuropathy in a stocking glove distribution, polyarthritis, and fever.	Hensen disease (leprosy), erythema nodosum leprosum, skin.
Z0	TH	UCD-2017-10	The patient is a 76-year-old male with a history of diabetes mellitus and bullous pemphigoid. He presented with diffused erythema, edema and slight fissuring in both palms without active blisters.	CD4+ T-cell lymphoproliferative process, skin.
Z0	TN	UCD-2015-10	The patient is a 2.5 year old male, who presented with a slow growing papule on the right anterior thigh; first noticed around one year of age.	Spitzoid melanoma of childhood, skin.
Z0	TN	UCD-2016-05	The patient is a 55-year-old woman with a history of alcoholic cirrhosis, currently being treated for breast cancer, who noticed a slowly-growing left cheek mass one year ago.	Mucoepidermoid carcinoma, low grade, skin from cheek.
Z0	TN	UCD-2016-12	A 75-year-old man presented with a 2-year history of a lesion on the left temple. A shave excision was performed on a 1.1 cm well-demarcated, ulcerated, brown pigmented plaque.	Atypical fibroxanthoma, skin.