Staghorn Calculus with Adenomatoid Tumor: A Case Report

Abstract

Testicular adenomatoid tumor is very rare. More understanding of the tumor and treatment is required for better outcomes. A 63-year-old man visited a urologist for staghorn calculus. During follow-up, he had recurrent left flank pain and intermittent hematuria. Computed tomography demonstrated left staghorn calculus, and then further assessment revealed left testicular swelling. Ultrasound showed epididymal mass. Percutaneous nephrolithotomy was deferred and we performed left radical orchiectomy. A pathologic examination revealed testicular adenomatoid tumor. This case highlights the importance of awareness of a very rare benign tumor in a patient with staghorn calculus.

Keywords: Adenomatoid tumor; Staghorn calculus; Testis.

Fig. 1.

Abdominal imaging showing the staghorn calculus and scrotal mass. a CT KUB showed that the left renal pelvis was occupied by a staghorn calculus. b Ultrasound of the scrotum showing the left epididymal mass of the testis. c Coronal section of computed tomography of the abdomen demonstrated a staghorn stone occupying the left renal collecting system. CT KUB, computed tomography of the kidneys, ureters, and bladder.

Fig. 2.

Histopathological examination of an excised specimen showing immune-histochemical staining was positive for calretinin (a), WT1 focal positive (b), tubules with nests of neoplastic cells (c), abundant eosinophilic cytoplasm (d), focal calcification (e), and interspersed lymphoid aggregate (f).