Adenosis of the prostate gland

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Adenosis of the prostate gland, also adenosis of the prostate, is a benign change of the prostate gland, typically seen in the transistion zone of the prostate, and may be mistaken for (low grade) prostatic adenocarcinoma.[1]

It is also known as atypical adenomatous hyperplasia.[2][3]

General

Microscopic

Features:

  • Glandular crowding - key feature.
    • Glands may be back-to-back.
  • Lack of prominent nucleoli.

DDx:

IHC

  • CK5/6 +ve. ‡
  • p63 +ve. ‡
  • AMACR -ve.

Notes:

  • ‡ Often patchy - some glands in a group may lack basal cells.

See also

References

  1. 1.0 1.1 Gaudin, PB.; Epstein, JI. (Jul 1995). "Adenosis of the prostate. Histologic features in needle biopsy specimens.". Am J Surg Pathol 19 (7): 737-47. PMID 7793471.
  2. Molinié, V.; Vadrot, J.; Duchatelle, V.; Balaton, A.; Abbey-Tobby, A.; Baumert, H. (Apr 2012). "[Diagnostic issues of prostate biopsies. Case 2. Atypical adenomatous hyperplasia (adenosis)].". Ann Pathol 32 (2): 114-7. doi:10.1016/j.annpat.2012.02.003. PMID 22520603.
  3. Humphrey, PA. (Dec 2012). "Atypical adenomatous hyperplasia (adenosis) of the prostate.". J Urol 188 (6): 2371-2. doi:10.1016/j.juro.2012.09.058. PMID 23000851.
  4. Epstein, JI. (Jan 2012). "Diagnosis of limited adenocarcinoma of the prostate.". Histopathology 60 (1): 28-40. doi:10.1111/j.1365-2559.2011.03990.x. PMID 22212076.