Difference between revisions of "Urothelial carcinoma-like prostatic carcinoma"
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==Microscopic== | ==Microscopic== | ||
Features: | Features: | ||
*Large epithelioid cells with prominent nucleoli. | *Large epithelioid cells with [[prominent nucleoli]]. | ||
*+/-Papillary structures (pseudopapillae).<ref name=pmid24503758/> | *+/-Papillary structures (pseudopapillae).<ref name=pmid24503758/> | ||
*+/-Features suggestive of prostatic carcinoma - cribriforming glands ''or'' poorly formed glandular structures. | *+/-Features suggestive of prostatic carcinoma - cribriforming glands ''or'' poorly formed glandular structures. | ||
Revision as of 05:41, 21 October 2015
Urothelial carcinoma-like prostatic carcinoma, abbreviated UCLPC, is a prostatic carcinoma that histologically mimics urothelial carcinoma.
It is not a formally recognized type of prostate cancer.
General
- Histologic features of high grade urothelial carcinomas and high grade prostatic carcinomas overlap.
- Relative proximity of the urinary bladder and prostate results in clinical scenarios where the primary is not readily apparent.
Clinical:
- History of urothelial carcinoma lacking.
- +/-Elevated PSA.
Gross
Classic tumour locations:
- Bladder neck.
- Trigone/base of bladder.
- Prostatic urethra.
Microscopic
Features:
- Large epithelioid cells with prominent nucleoli.
- +/-Papillary structures (pseudopapillae).[1]
- +/-Features suggestive of prostatic carcinoma - cribriforming glands or poorly formed glandular structures.
DDx:
- Urothelial carcinoma.
- Collision tumour consisting of urothelial carcinoma and prostatic carcinoma.
- Other carcinomas.
Images
UCLPC - very low mag.
UCLPC - low mag.
UCLPC - low mag.
UCLPC - intermed. mag.
UCLPC - intermed. mag.
UCLPC - high mag.
UCLPC - high mag.
UCLPC - very high mag.
UCLPC - very high mag.
PC - intermed. mag.
PC - high mag.
IHC
Features:[1]
- GATA3 -ve.
- NKX3.1 +ve.
Images
UCLPC - NKX3.1 - intermed. mag.
UCLPC - AMACR-CK5/6 - very low mag.
UCLPC - AMACR-CK5/6 - intermed. mag.
UCLPC - GATA3 - intermed. mag.
Urothelium - GATA3 - high mag.
