Testis & epididymis
Other tumors

Topic Completed: 1 March 2014

Minor changes: 11 September 2020

Copyright: 2002-2020, PathologyOutlines.com, Inc.

PubMed Search: Testis plasmacytoma

Jennifer Gordetsky, M.D.
Page views in 2019: 289
Page views in 2020 to date: 279
Cite this page: Gordetsky J. Plasmacytoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/testisplasmacytoma.html. Accessed September 30th, 2020.
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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