Malacoplakia of the Epididymis
A 61-year-old man presented with a painful mass of his left epididymis for several months. He had no fever or history of trauma. The measured values of hematological parameters and urine indexes were within the normal range. Urine culture did not reveal any growth. Ultrasonography of the left epididymis revealed a mass lesion of mixed echotexture in the epididymal tail (). The patient underwent epididymectomy. Histopathology showed an epididymal mass comprising sheets of histiocytes with granular eosinophilic cytoplasm () admixed with neutrophils, lymphocytes, and plasma cells. Many of the histiocytes contained small round to oval targetoid structures that were morphologically consistent with Michaelis-Gutmann bodies. These histologic findings were characteristic of malakoplakia. The patient's postoperative recovery was uneventful and the surgical outcome has been satisfactory for 8 months.