Testis & epididymis

Other tumors


Topic Completed: 1 March 2014

Minor changes: 23 April 2021

Copyright: 2002-2021, PathologyOutlines.com, Inc.

PubMed Search: Testis plasmacytoma

Jennifer Gordetsky, M.D.
Page views in 2020: 383
Page views in 2021 to date: 454
Cite this page: Gordetsky J. Plasmacytoma. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/testisplasmacytoma.html. Accessed December 6th, 2021.
Definition / general
  • Testicular involvement by plasma cell neoplasia
Clinical features
Radiology images

Images hosted on other servers:

Ultrasonography - enlarged right testicle

Two pelvic masses

Case reports
Gross description
  • Firm to soft, tan, golden brown or grey white
  • May be large and replace most of testicular parenchyma
  • May be extensively hemorrhagic
Microscopic (histologic) description
  • Central effacement of tubules by atypical plasma cells (bi or multinucleated)
  • Tubules often spared at periphery
  • Anaplastic cells may obliterate parenchyma or invade between seminiferous or epididymal tubules
  • Tumor cells can look like typical plasma cells or be deceptive with vesicular nuclei and large central nucleoli
Microscopic (histologic) images

Images hosted on other servers:

Positive for plasma cell marker

Positive stains
Negative stains
Additional references
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