Testicular T-cell lymphomas are rare and heterogeneous. Their rarity, nonspecific clinical and radiologic features, histomorphologic heterogeneity, and aberrant immunohistochemical expression may impose diagnostic difficulties for clinicians and pathologists. They may mimic germ cell neoplasms, infectious orchitis, and scrotal abscess. We report a case of a high-grade T-cell lymphoma of the testes in an elderly man with uncontrolled diabetes mellitus. It was clinically and radiologically unexpected and was confused with viral or tuberculous orchitis with abscess formation and systemic sepsis.
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