Case of the Week
- Details
Case History
Placenta, 24-year-old P3013 at 28 5/7th weeks. Placental weight 641 g (210 – 331 g expected). Fetal hydrops and intrauterine demise.
What is the diagnosis?
- Cytomegalovirus infection
- Herpes simplex virus infection
- Listeria monocytogenes infection
- Fetal transient abnormal myelopoiesis (TAM)
- Parvovirus B-19 infection
- Details
Case History
71-year-old patient with small bowel obstruction after two surgical procedures: inguinal hernia repair (5 days prior) and prostatectomy (12 days prior). Patient underwent small bowel resection during which a low anterior abdominal adhesion on the pubis was also noted.
What is the diagnosis?
- Fibromatosis with ossification
- Heterotopic mesenteric ossification
- Ossifying fibrosarcoma
- Extraskeletal osteosarcoma
- Details
Case History
A 58 year old female with PMH for thyroid carcinoma S/P thyroidectomy in 2003. She had uterine fibroids been removed. Her follow up Abd CT in 2018 demonstrated cystic lesion in the caudate lobe measuring 1.8 x 1.9 cm. Recent CT demonstrated increasing in size to 3.8 x 2.9 cm.
What is the diagnosis?
- MCN
- Simple Solitary Cyst
- Metastatic Carcinoma
- Cystadenoma
- Cystadenocarcinoma
- Details
Case History
The enlarged splenectomy specimen of a 44-year old man shows multiple variably sized blood-filled nodules throughout the cut surface (A-D). Immunophenotype: CD163+ (subset of cells), CD34+ (subset of cells), CD8 negative in red pulp sinuses.
What is the diagnosis?
- Hemangioma
- Littoral Cell Angiosarcoma
- Splenic Hamartomas
- Littoral Cell Angioma
- Details
Case History
This is an 18-year-old female with bilateral adnexal masses.
What is the diagnosis?
- Granulosa cell tumor
- Sertoli Leydig cell tumor
- Dydgerminoma
- Lymphoma
- Details
Case History
This is a 41 year old man with admitted from an outside hospital for encephalopathy. Chest x-ray shows multiple nodules suggestive of disseminated tuberculosis.
What is the diagnosis?
- Tuberculosis
- Histoplasmosis
- Coccidomycosis
- Blastomycosis
- Details
Case History
A 30-year-old man presented with a left elbow mass. A biopsy showed a small, blue, round cell tumor. The lesional cells were positive for myoD1, with very limited expression of desmin and myogenin.
What is the diagnosis?
- Extraskeletal osteosarcoma
- Ewing sarcoma
- Embryonal rhabdomyosarcoma
- Sclerosing rhabdomyosarcoma
- Details
Case History
Images are from a 61-year-old male with 12 cm renal mass involving renal vein, sinus and perirenal fat.
Which statement is false regarding this case?
A. IHC for FH or 2-SC are recommended
B. This is a Type 2 Papillary RCC, no studies needed
C. TFEB-amplified RCC is in the ddx
D. MART1 expression by this tumor would not be a surprise
- Details
Case History
A 59-year-old female with cystic liver lesion. Prior history of thyroid cancer 17 years ago. What is the diagnosis?
What is the diagnosis?
- Metastatic follicular carcinoma
- Hepatocellular carcinoma
- Papillary mesothelioma
- Metastatic papillary thyroid carcinoma
