Testis & epididymis


Cystic dysplasia

Topic Completed: 1 December 2012

Minor changes: 11 April 2021

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PubMed Search: testicular Cystic dysplasia

Sean R. Williamson, M.D.
Rafael Jimenez, M.D.
Page views in 2020: 371
Page views in 2021 to date: 648
Cite this page: Williamson S. Cystic dysplasia. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/testiscysticdysplasia.html. Accessed December 3rd, 2021.
Definition / general
  • Rare congenital disorder with numerous irregular cystic spaces in mediastinum testis
  • May be due to defect in connection between rete testis / seminiferous tubules and efferent tubules
  • Sometimes associated with renal agenesis or dysplasia (ipsilateral)
Cystic dysplasia - rete testis
  • Infants and children, presents as testicular mass
  • Cystic dilation of rete testis with compression / atrophy of seminiferous tubules
  • Developmental anomaly associated with ipsilateral renal agenesis
Case reports
Clinical images

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Epididymal cyst

Microscopic (histologic) description
  • Cysts lined by flattened to cuboidal epithelium separated by incomplete connective tissue septa; resembles rete testis
Microscopic (histologic) images

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Multiple cystic spaces

Positive stains
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