Preoperative detection of splenogonadal fusion by CT

Splenogonadal fusion (SGF) is a rare congenital anomaly. It is typically identified at orchiectomy for a suspected testicular tumor or during orchiopexy. The purpose of our study is to proposal possibly preoperative diagnosis of continuous-type SGF by contrast-enhanced spiral computed tomography (CT). Pre- and post contrast-enhanced CT scan at pelvic and scrotal regions was performed to a 15-month-old boy who had a left scrotal mass for evaluation. The slice collimation was 5 mm and the pitch was 3.75. Curved planar reconstruction was done after scan. Before administration of the contrast medium, a homogeneous noncalcified soft mass was seen on the left testicle. After administration of the contrast medium, the mass was prominently enhanced. It extended upward through the left inguinal ring into the left lower abdomen. Preoperative diagnosis of continuous-type SGF by contrast-enhanced spiral CT is possible depending on the basis of its characteristic CT features.