Testicular lymphoma

Dr Owen Kang and Dr Henry Knipe et al.

Testicular lymphoma is an uncommon cause of testicular malignancy. Lymphoma can involve the testes in three ways:

  • primary site of extranodal disease (primary testicular lymphoma)
  • secondary involvement of systemic disease
  • primary manifestation of subclinical systemic disease

This article is concerned with primary testicular lymphoma.

Testicular lymphoma accounts for ~10% of testicular malignancies and ~2% of non-Hodgkin lymphomas 1. It is the most common bilateral intratesticular tumour.

It is the most common testicular tumour in men >60 years 3

Unilateral testicular swelling and/or mass is the most common presentation, although bilateral presentation is common (40%) 1,3.  

B symptoms such as weight loss, fever, and weakness may occur.

Diffuse large B-cell lymphoma (DLBCL) accounts for the majority (~80%) of cases. Extranodal involvement is common, especially 3,4:

  • Waldeyer's ring
  • skin and subcutaneous tissues
  • central nervous system
  • contralateral testis
  • lung
Ultrasound

Ultrasound features are non-specific 4:

  • it may present as
    • diffuse enlargement with ill-defined hypoechoic signal
    • discrete hypoechoic intratesticular mass(es)
  • epididymis may be enlarged and hypoechoic as well
  • colour Doppler: testis is markedly hypervascular

Orchiectomy and systemic chemotherapy is preferred treatment due to distant sites of relapses. 10-year survival is reported at 88% with a relapse rate of 8% 5,6.

For ultrasound appearances consider 4:

Lymphoma
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Article information

rID: 33180
Section: Pathology
Synonyms or Alternate Spellings:
  • Primary testicular lymphoma

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