Biphasic Hyalinizing Psammomatous Renal Cell Carcinoma: Another Provisional Entity Emerging From the Papillary Renal Cell Carcinoma Pandora's Box

Int J Surg Pathol. 2021 Oct;29(7):783-787. doi: 10.1177/1066896921998435. Epub 2021 Mar 17.

Abstract

Papillary renal cell carcinoma (especially type 2) is a Pandora's box with many newly described renal cell carcinomas emerging from it as a result of enhanced molecular techniques. Biphasic hyalinizing psammomatous renal cell carcinoma (BHPRCC) is the latest addition, which was first described a few months ago. Here, we report a case of BHPRCC to supplement the very limited literature available about this entity, and to highlight the characteristic morphology as well as the recurring molecular alterations in the neurofibromatosis 2 gene.

Keywords: biphasic; carcinoma; hyalinizing; neurofibromatosis 2 gene; psammomatous; renal.

Publication types

  • Case Reports

MeSH terms

  • Biopsy
  • Carcinoma, Papillary / diagnosis*
  • Carcinoma, Papillary / genetics
  • Carcinoma, Papillary / pathology
  • Carcinoma, Papillary / surgery
  • Carcinoma, Renal Cell / diagnosis*
  • Carcinoma, Renal Cell / genetics
  • Carcinoma, Renal Cell / pathology
  • Carcinoma, Renal Cell / surgery
  • Cryosurgery
  • Humans
  • Kidney / diagnostic imaging
  • Kidney / pathology*
  • Kidney / surgery
  • Kidney Neoplasms / diagnosis*
  • Kidney Neoplasms / genetics
  • Kidney Neoplasms / pathology
  • Kidney Neoplasms / surgery
  • Male
  • Middle Aged
  • Mutation
  • Neurofibromin 2 / genetics

Substances

  • NF2 protein, human
  • Neurofibromin 2