Pathology Case of the Month

College of American Pathologists (CAP)

Listed by site and type without diagnosis.

Sorted by chronological order  Sorted with diagnosis  Show the codes in a separate window

 

 Site Code

 

A0:   Alimentary canal

F0:    Female genital system

L0:    Hepatobiliary tract & pancreas

  A1: Esophagus

  F1:  Female external genitalia

  L1:  Liver

  A2: Stomach

  F2:  Vagina

  L2:  Gallbladder & extrahepatic biliary track

  A3: Duodenum

  F3:  Uterine cervix

  L3:  Pancreas

  A4: Small intestine  

  F4:  Uterine corpus & soft tissue

M0:  Mediastinum & thymus

  A5: Appendix

  F5:  Fallopian tube

N0:   Central nervous system

  A6: Colon & cecum

  F6:  Ovary

 N1:  Nerve & muscle biopsy

  A7: Rectum and anus

  F7:  Placenta and trophoblasts

O0:   Eye & orbit

B0:   Breast & skin of breast

G0:   Male genital system

P0:    Pleura, peritoneum, mesentery, & omentum

C0:   Cardiovascular system

  G1: Testis & related structures

Q0:   Head & neck, miscellaneous

  C1: Heart

  G2: Prostate & seminal vesicles

R0:    Adrenal & paraganglia

  C2: Major blood vessels

  G3: Penis & related structures

S0:    Soft tissue & peripheral nerve (surgical)

D0:   Oral cavity, mandible, & maxilla

H0:   Bone marrow, lymph nodes & spleen

T0:    Thyroid & parathyroid

  D1: Mucosa, soft tissue, & tongue

I0:     Larynx & upper respiratory tract

  T1:  Thyroid

  D2: Mandible & maxilla

J0:     Lung & lower respiratory tract

  T2:  Parathyroid

E0:    Major salivary glands

K0:    Urinary system & adrenal

U0:   Pituitary gland & sellar area

 

 K1:   Kidney, surgical

V0:   Small blood vessels & lymphatics

 

 K2:   Ureter, bladder, urachus, & urethra

W0:  Bone & joint

 

 K3:   Kidney, medical

X0:    Miscellaneous & unclassified

 

 

Z0:    Skin

 

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

A2

TN

2019-01-1

A 92 year-old woman with a 6 cm gastric ulcer.

A2

TN

2019-06-1

A 56 year-old man with a 5.2 cm gastric tumor.

A4

TN

2018-07-2

A 30 year-old woman with a 20 cm cystic mass causing bowel obstruction.

A6

TH

2019-09-1

A 37 year-old woman with a uterine mass and extensive flattening in the colon accompanied by regional lymph node enlargement.

A6

TN

2016-05-1

A 58 year-old man with a 2.8 cm pedunculated polyp discovered during surveillance colonoscopy.

A6

TN

2017-06-2

A 21 year-old man with intermittent rectal bleeding.

B0

TN

2016-06-3

A 57 year-old with a breast mass. She has a history of invasive ductal carcinoma of the breast 3 years ago.

B0

TN

2016-12-1

A 24 year-old pregnant woman with a 1 cm mass in her breast.

B0

TN

2018-03-1

A 21 year-old woman with a 6.5 cm breast mass.

B0

TN

2019-10-1

An 18 year-old woman with a non-tender breast mass.

C1

I

2016-03-1

A 57 year-old man with a long history of non-ischemic dilated cardiomyopathy and cardiac transplantation.

C1

TN

2017-03-2

A 53 year-old man with a pedunculated mass in his left atrium.

C1

TN

2019-09-1

A 23 year-old with an 8.5 cm right atrial mass.

E0

TN

2018-01-1

A 79 year-old woman with a 2.4 cm parotid mass.

F1

TN

2016-07-1

A 72 year-old woman with a 4.0 cm slowly spreading plaque in the vulva.

F2

TN

2018-02-2

A 35 year-old with a 2.5 cm polypoid mobile mass attached to the left posterior vaginal wall.

F4

TN

2017-08-1

A 56 year-old with abnormal uterine bleeding.

F4

TN

2018-02-1

A 54 year-old abnormal perimenopausal bleeding and a 10 cm polypoid uterine mass filling her uterine cavity.

F6

TM

2019-03-2

A 70 year-old woman with bilateral enlarged ovaries and an appendiceal lesion.

F6

TN

2016-04-1

A 42 year-old woman with a 12 cm ovarian mass.

F6

TN

2016-06-1

A 19 year-old woman with a pelvic mass.

F6

TN

2016-12-2

A 46 year-old woman with progressive hirsutism and a slightly enlarged ovary.

F6

TN

2017-02-1

A 53 year-old woman with an 8 cm adnexal mass.

F6

TN

2017-10-1

A 60 year-old woman with a 10 cm cystic ovarian mass.

F6

TN

2018-06-1

A 24 year-old woman with a 12 cm solid ovarian mass.

F6

TN

2020-02-1

A 29 year-old woman with a 12 cm solid left ovarian mass.

F6

TN

2020-03-2

A 58 year-old woman with a 14 cm ovarian mass.

F6

TN(P)

2017-12-1

A 9 year-old girl with a right adnexal mass.

F7

I

2017-02-2

A 34 year-old woman presents at 27 weeks gestation with decreased fetal movement for three days, fever, chills, and body aches.

F7

I

2018-12-1

A 22 year-old 37 weeks pregnant woman with fetal distress.

F7

TN

2019-07-1

A 19 year-old woman with vaginal bleeding during the 14th week of pregnancy.

F7

U

2019-06-2

A 24 year-old woman with profuse vaginal bleeding.

G1

TM

2020-04-3

A 65 year-old man with a testicular mass.

G1

TN

2016-11-1

A 20 year-old man with an enlarging testicular mass.

G1

TN

2017-07-1

A 42 year-old man with a 5 cm testicular mass.

G1

TN

2019-01-2

A 35 year-old man with a 7 cm testicular mass.

G3

TN

2019-05-2

A 44 year-old man with a 10 cm exophytic, fungating penile mass.

H0

I

2017-11-2

A 28 year-old man with generalized adenopathy and weight loss.

H0

TH

2017-04-2

A 48 year-old man with a growing right neck mass.

H0

TH

2017-09-2

An 80 year-old woman with splenomegaly.

H0

TH

2018-09-1

A 65 year-old with a large abdominal mass involving the transverse colon and abdominal lymphadenopathy.

H0

TM

2019-11-2

A 62 year-old man with an enlarged left internal iliac lymph node.

H0

TN

2016-04-2

An 80 year-old man with a rapidly enlarging firm mobile inguinal mass.

H0

TN

2016-10-2

A 52 year-old with an 8 cm mesenteric mass and history of rectal adenocarcinoma.

H0

TN

2017-09-1

A 66 year-old man with splenomegaly.

H0

TN

2019-10-2

A 56 year-old woman with a mass over her left lower thorax.

H0

U

2016-02-1

A 63 year-old man with progressive pancytopenia and a ruptured spleen.

H0

U

2019-05-3

A 67 year-old woman with splenomegaly.

H0

U(P)

2018-12-2

A 38 weeks gestation boy with up-slanting eyes, webbed toes, and a mumur consistent with a ventricular septal defect.

J0

TN

2016-07-2

A 60 year-old man with a 2.5 cm lesion in his left upper lobe of lung.

J0

TN

2018-09-2

A 77 year-old with a 5 cm lung nodule

J0

TN

2020-03-1

A 66 year-old woman with a 10 cm mass at the periphery of her right upper lobe of lung.

K1

I

2017-05-1

A 50 year-old woman with sudden onset flank pain and low-grade fever, an irregular kidney with dilated pelvis.

K1

TN

2016-03-2

A 52 year-old woman with gross hematuria and a left flank mass.

K1

TN

2016-09-2

A 59 year-old man with a 10 cm renal mass.

K1

TN

2017-11-1

A 67 year-old man with a 10.5 cm renal mass.

K1

TN

2019-02-1

A 37 year-old woman with a 10 cm renal mass.

K1

TN

2019-03-1

A 67 year-old man with a 13.8 cm renal mass.

K1

TN(P)

2016-08-1

A 3 month-old infant with a palpable abdominal mass.

K1

TN(P)

2017-10-2

A 9 month-old boy with a 6.5 cm renal mass.

K1

TN(P)

2020-04-1

A 2 year-old boy with a right upper quadrant mass.

K2

TN

2020-04-2

A 44 year-old woman with a large mass arising in the posterior wall of the bladder.

L1

I

2018-03-2

A 19 year-old man with a history of polycythemia vera and epigastric pain for several days. .

L1

I

2020-02-2

A 39 year-old man with cholecdocholithiasis, prominent appearing extrahepatic bile ducts, and a vague mass near the hilum of the liver as demonstrated by ultrasound.

L1

TC

2018-10-1

A 41 year-old woman with a 12 cm cyst in her left lobe of liver.

L1

TM

2018-04-2

A 74 year-old man with numerous masses in the distal small intestine and liver.

L1

TM

2020-05-1

A 36 year-old woman with a left hepatic mass.

L1

TN

2017-06-1

A 42 year-old woman with multiple nodules involving the liver.

L1

TN

2018-05-2

A 39 year-old woman with a liver mass. (The clinical information and choices for diagnosis in this case is a mismatch. The image and the discussion are correct.)

L1

TN

2018-08-1

A 24 year-old woman with a 5.3 m well-circumscribed hepatic nodule.

L1

TN(P)

2016-02-2

A 9 year-old boy with a 12.5 cm liver mass.

L1

TN(P)

2016-11-2

A 23 year-old delivered a female neonate at 32 weeks’ gestation with low Apgar score and thrombocytopenia.

L1

TN(P)

2019-04-1

A 4 year-old boy with a history of partial hepatectomy and now with multiple hepatic nodules.

L1

U

2018-06-2

A 66 year-old man with combined heart and liver transplantation.

L3

TN

2019-10-3

A 26 year-old woman with an 8 cm mass in her pancreas.

M0

TB

2017-07-2

A 48 year-old woman with a 12.5 cm intrathoracic, mediastina, well-circumscribed mass.

M0

TH(P)

2019-12-2

A 14 year-old boy with a large anterior mediastinal mass.

M0

TN

2016-10-1

A 33 year-old woman with myasthenia gravis and a 10 cm anterior mediastinal mass.

M0

TN

2019-04-2

A 41 year-old with a mediastinal mass.

M0

TN(P)

2018-04-1

A 3 year-old girl with an incidental posterior mediastinal mass.

M0

TS

2018-09-3

A 71 year-old man with a thymic mass.

N0

TN

2016-01-1

A 57 year-old man with a sacral osteolytic mass compressing the surrounding nerves.

N0

TN

2018-10-2

A 68 year-old woman with a 4 cm parasagittal mass in her parietal lobe.

P0

TN

2017-04-1

A 62 year-old woman with pleural effusion and multiple pleural tumor nodules on the right side.

P0

TN

2018-05-1

A 57 year-old woman with a large omental cake.

R0

TN

2016-09-1

A 49 year-old woman with a 15 cm adrenal mass.

S0

TN

2016-06-2

A 60 year-old man with abdominal pain and a 7 cm mesenteric mass.

S0

TN

2016-08-2

A 32 year-old with a 6.3 cm deep soft tissue mass in his thigh.

S0

TN

2017-08-2

A 48 year-old woman with a deep 7 cm mass in vulvar region.

S0

TN

2018-01-3

A 4 year-old with an 8 cm paravertebral mass focally extending into the spinal canal.

S0

TN

2018-07-1

A 47 year-old man with a superficial posterior neck mass.

S0

TN

2019-02-2

A 72 year-old woman with a 7 cm deep mass in her upper extremity.

S0

TN

2019-05-1

A 47 year-old woman with a 5.2 cm thigh mass.

S0

TN

2019-11-1

A 45 year-old with a 4.5 cm mass in her left flank.

S0

TN

2020-01-1

A 71 year-old with a 32 cm retroperitoneal mass.

S0

TN(P)

2017-01-2

A 26 month-old boy with a 4.5 cm thigh mass without cutaneous involvement.

S0

TN(P)

2018-11-1

A 13 year-old boy with a 5 cm soft tissue mass the posterior aspect of his knee.

T0

I

2017-05-2

A 48 year-old woman with hypothyroidism and a firm to hard thyroid.

T0

TN

2019-09-2

A 70 year-old woman with a 7 cm supraclavicular neck mass.

T0

TS

2017-01-1

A 40 year-old woman, with a thyroid nodules.

W0

TN

2019-12-1

A 57 year-old man with an 8 cm mass in his sacral area.

W0

TN TN

2016-01-2

A 65 year-old man with a painful left intramedullary pelvic mass.

Z0

I

2018-01-2

A 62 year-old woman with an 8 cm indurated rash on the right calf.

Z0

I

2018-11-2

A 45 year-old with an infected wound.

Z0

TN

2017-03-1

A 72 year-old man with a large exophytic and fungating mass involving the amputation stump.