Small cell carcinoma of the urinary bladder
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Small cell carcinoma of the urinary bladder | |
---|---|
Diagnosis in short | |
Small cell carcinoma of the urinary bladder. H&E stain. | |
LM DDx | small cell carcinoma of the prostate gland, lymphoma (large cell), other small round blue cell tumours |
Stains | pankeratin +ve, chromogranin +ve, synaptophysin +ve, CD56 +ve |
Site | urinary bladder |
| |
Symptoms | +/-hematuria |
Prevalence | very rare |
Prognosis | poor |
Clin. DDx | other bladder tumours esp. urothelial carcinoma |
Small cell carcinoma of the urinary bladder is a rare malignant neoplasm of the urinary bladder.
General
Microscopic
Features:
- See small cell carcinoma.
DDx:
- Small cell carcinoma of the prostate gland.
- Lymphoma, large cell.
- Other small round blue cell tumours.
IHC
- Pankeratin +ve,
- Chromogranin +ve.
- Synaptophysin +ve.
- CD56 +ve.