Testicular malakoplakia: a rare sonographic mimic of malignancy.

Testicular malakoplakia is a rare, benign condition that most often occurs in an immunocompromised patient with chronic infection. Its occurrence is acute, with pain and testicular enlargement. Sonography is commonly performed to evaluate the patient for epididymitis or torsion. The appearance of testicular malakoplakia on sonography examination has only rarely been described, making its diagnosis challenging. Because its appearance overlaps with testicular neoplasm and infection, it should be considered when making a differential diagnosis of a diffuse testicular abnormality in the appropriate clinical setting.