Hyperplasia of mesonephric remnant, epididymal type: A case report

Jeong Hyeon Lee, Hyunchul Kim, Chul Hwan Kim, Jae Y. Ro

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Mesonephric rests or mesonephric remnants are vestiges of embryonic structures called mesonephric (wolffian) ducts. It usually can be seen in the lateral wall of the cervix uteri. In males, the mesonephric remnants are seen in epididymis and efferent ductules. Prostate is one of the rare locations, on which the mesonephric remnants can be found. Hyperplasia of mesonephric remnants of prostate is rare but important because sometimes it is difficult to differentiate from adenocarcinoma. The lesion is important in the differential diagnosis from the high grade prostatic intraepithelial neoplasia. Here, we report an additional case of mesonephric hyperplasia, epididymal type, in a 66-year-old man. Microscopically, it showed tubular structures lined by columnar cells with pseudostratified elongated hyperchromatic nuclei. The cells showed negative reaction on high molecular weight cytokeratin and prostate-specific antigen immunostain.

Original languageEnglish
Pages (from-to)69-71
Number of pages3
JournalBasic and Applied Pathology
Issue number2
Publication statusPublished - 2009 Jun
Externally publishedYes


  • Hyperplasia
  • Mesonephric duct
  • Prostate

ASJC Scopus subject areas

  • Pathology and Forensic Medicine


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