Difference between revisions of "Sarcomatoid carcinoma of the prostate"
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==Microscopic== | ==Microscopic== | ||
Features:<ref name=Ref_GUP80>{{Ref GUP|77 & 80}}</ref> | Features:<ref name=Ref_GUP80>{{Ref GUP|77 & 80}}</ref> | ||
* | *Typically a biphasic tumour: | ||
*#Spindle cells (sarcomatous component). | *#Spindle cells (sarcomatous component). | ||
*#*May include components of: [[osteosarcoma]], [[chondrosarcoma]] and/or [[rhabdomyosarcoma]]. | *#*May include components of: [[osteosarcoma]], [[chondrosarcoma]] and/or [[rhabdomyosarcoma]]. | ||
*#Epithelial (glandular) component (like conventional prostate carcinoma). | *#Epithelial (glandular) component (like conventional prostate carcinoma). | ||
*#*May be absent. ‡ | |||
Note: | |||
* ‡ The history is should be compelling or the tumour keratin positive, if no epithelial component is present. | |||
DDx: | DDx: | ||
*[[Sarcomatoid urothelial carcinoma]]. | *[[Sarcomatoid urothelial carcinoma]]. | ||
*[[Sarcoma]]. | *[[Sarcoma]], e.g. [[rhabdomyosarcoma]], [[liposarcoma]], [[leiomyosarcoma]]. | ||
===Images=== | ===Images=== |
Revision as of 21:42, 17 July 2015
Sarcomatoid carcinoma of the prostate | |
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Diagnosis in short | |
![]() Sarcomatoid carcinoma of the prostate. H&E stain. | |
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Synonyms | sarcomatoid prostatic carcinoma |
Subtypes | (subtype of prostate carcinoma) |
LM DDx | sarcoma, sarcomatoid urothelial carcinoma |
IHC | PSA +ve, keratin +ve |
Gross | see prostate carcinoma |
Grossing notes | see prostate carcinoma |
Site | prostate gland - see prostate carcinoma |
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Syndromes | see prostate carcinoma |
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Clinical history | typically have history of conventional prostate carcinoma |
Prevalence | uncommon |
Prognosis | poor |
Clin. DDx | see prostate carcinoma |
Treatment | see prostate carcinoma |
Sarcomatoid carcinoma of the prostate, also sarcomatoid prostatic carcinoma, is a rare subtype of prostatic carcinoma with histomorphologic features suggestive of a sarcoma, and a poor prognosis.
General
Microscopic
Features:[2]
- Typically a biphasic tumour:
- Spindle cells (sarcomatous component).
- May include components of: osteosarcoma, chondrosarcoma and/or rhabdomyosarcoma.
- Epithelial (glandular) component (like conventional prostate carcinoma).
- May be absent. ‡
- Spindle cells (sarcomatous component).
Note:
- ‡ The history is should be compelling or the tumour keratin positive, if no epithelial component is present.
DDx:
Images
Sarcomatoid carcinoma:
Accompanying (conventional) prostatic carcinoma:
IHC
Features - typical:[2]
- PSA +ve.
- Keratin +ve.
See also
References
- ↑ 1.0 1.1 Hansel, DE.; Epstein, JI. (Oct 2006). "Sarcomatoid carcinoma of the prostate: a study of 42 cases.". Am J Surg Pathol 30 (10): 1316-21. doi:10.1097/01.pas.0000209838.92842.bf. PMID 17001164.
- ↑ 2.0 2.1 Zhou, Ming; Magi-Galluzzi, Cristina (2006). Genitourinary Pathology: A Volume in Foundations in Diagnostic Pathology Series (1st ed.). Churchill Livingstone. pp. 77 & 80. ISBN 978-0443066771.