Difference between revisions of "Papillary renal neoplasm with reverse polarity"

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'''Papillary renal neoplasm with reverse polarity''' is a rare [[renal tumour]] and evolving entity.<ref name=pmid31135486>{{cite journal |authors=Al-Obaidy KI, Eble JN, Cheng L, Williamson SR, Sakr WA, Gupta N, Idrees MT, Grignon DJ |title=Papillary Renal Neoplasm With Reverse Polarity: A Morphologic, Immunohistochemical, and Molecular Study |journal=Am J Surg Pathol |volume=43 |issue=8 |pages=1099–1111 |date=August 2019 |pmid=31135486 |doi=10.1097/PAS.0000000000001288 |url=}}</ref>
'''Papillary renal neoplasm with reverse polarity''' is a rare [[renal tumour]] and evolving entity.<ref name=pmid31135486>{{cite journal |authors=Al-Obaidy KI, Eble JN, Cheng L, Williamson SR, Sakr WA, Gupta N, Idrees MT, Grignon DJ |title=Papillary Renal Neoplasm With Reverse Polarity: A Morphologic, Immunohistochemical, and Molecular Study |journal=Am J Surg Pathol |volume=43 |issue=8 |pages=1099–1111 |date=August 2019 |pmid=31135486 |doi=10.1097/PAS.0000000000001288 |url=}}</ref>
==General==
*Evolving entity.
*Subset of ''[[papillary renal cell carcinoma]]''.
==Micro==
Features:<ref name=pmid31135486/>
*Branching papillae with:
**Thin fibrovascular cores.
**Cuboidal to columnar lining cells with granular eosinophilic cytoplasm.
***May have occasional cytoplasmic clearing.
**Smooth luminal borders.
**Reverse polarized nuclei (luminal nuclei; nuclei closer to lumen than basement membrane).
**Nucleoli absent or small.
DDx:
*[[Renal tumours with eosinophilic cytoplasm]].


==IHC==
==IHC==

Revision as of 21:57, 3 December 2021

Papillary renal neoplasm with reverse polarity is a rare renal tumour and evolving entity.[1]

General

Micro

Features:[1]

  • Branching papillae with:
    • Thin fibrovascular cores.
    • Cuboidal to columnar lining cells with granular eosinophilic cytoplasm.
      • May have occasional cytoplasmic clearing.
    • Smooth luminal borders.
    • Reverse polarized nuclei (luminal nuclei; nuclei closer to lumen than basement membrane).
    • Nucleoli absent or small.

DDx:

IHC

Features:[1]

  • CK7 +ve.
  • CD10 +ve (all cases).
  • GATA3 +ve (all cases).
  • Vimentin -ve (all cases).
  • CD117 -ve.
  • AE1/AE3 +ve.
  • EMA +ve.
  • L1CAM +ve.

See also

References

  1. 1.0 1.1 1.2 Al-Obaidy KI, Eble JN, Cheng L, Williamson SR, Sakr WA, Gupta N, Idrees MT, Grignon DJ (August 2019). "Papillary Renal Neoplasm With Reverse Polarity: A Morphologic, Immunohistochemical, and Molecular Study". Am J Surg Pathol 43 (8): 1099–1111. doi:10.1097/PAS.0000000000001288. PMID 31135486.