Signet ring cell-like adenocarcinoma of the prostate

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Signet ring cell carcinoma of the prostate, also prostatic signet ring cell carcinoma, is a rare aggressive form of prostate cancer.

General

  • Very rare - 9 cases in a series of 29,783 prostate cancer cases.[1]
  • Criteria vary - percentage of SRCs required for Dx varies from 20% to 50%.[1]

Microscopic

Features:

  • Signet ring cells - see basics article.
  • +/-Conventional prostatic carcinoma.

DDx:

Images

Stains

Note:

  • May be mucin stain -ve.

IHC

  • PSAP +ve.[1]
  • PSA +ve.
  • CEA -ve.

Note:

  • If prostate stains (PSAP, PSA, NKX3.1) are negative, a GI primary should be excluded. Clinical correlation may be required.

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Warner, JN.; Nakamura, LY.; Pacelli, A.; Humphreys, MR.; Castle, EP. (Dec 2010). "Primary signet ring cell carcinoma of the prostate.". Mayo Clin Proc 85 (12): 1130-6. doi:10.4065/mcp.2010.0463. PMID 21123640.