Testis & epididymis
Nonneoplastic lesions

Topic Completed: 1 December 2012

Minor changes: 19 February 2020

Copyright: 2002-2018, PathologyOutlines.com, Inc.

PubMed Search: Hematocele [title] testicular

Sean R. Williamson, M.D.
Page views in 2019: 11,041
Page views in 2020 to date: 5,303
Cite this page: Williamson S. Hydrocele. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/testishydrocele.html. Accessed August 8th, 2020.
Definition / general
  • Accumulation of clear serous fluid between visceral and parietal layers of tunica vaginalis; associated with trauma and epididymitis
  • Diagnose by transillumination
  • Note: take sufficient sections to rule out malignant mesothelioma
Gross images

Images hosted on other servers:

Large hydrocele

Microscopic (histologic) description
  • Loose connective tissue with mesothelial lining
  • If long standing, may have chronic inflammatory infiltrate, fibrosis, squamous metaplasia
Differential diagnosis
  • Spermatocele: epithelial lining, often with cilia, lumen contains spermatozoa
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