title: Mature teratoma arising from an intraabdominal testis in a 2-month-old boy: case report and review of intraabdominal testicular tumors in children.
abstract: Tumors arising in an undescended testis are rare in infants. We report a mature teratoma in an intraabdominal testis of a 2-month-old boy. He presented with a large left-sided abdominal mass and nonpalpable left testis. Abdominal ultrasound and computed tomography showed a well-defined, sizable cystic tumor with focal calcification in the lower abdomen. Tumor markers were all within normal limits. Surgical resection revealed a large tumor arising from an intraabdominal left testis, and histologic analysis identified a mature teratoma. The tumor was completely removed, and there was no recurrence at follow-up 3 years later. The histologic condition of prepubertal intraabdominal testicular (IAT) tumors is quite different from that of testicular tumors in childhood descended testes and postpubertal IAT tumors. A total of 30 cases of IAT tumors in children, including our case, were reviewed to elucidate this issue.
authors.affiliation: Department of Surgery, Division of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
authors.forename: Natsumi
authors.initials: N
authors.lastname: Tanaka
authors.forename: Akihiro
authors.initials: A
authors.lastname: Yoneda
authors.forename: Masahiro
authors.initials: M
authors.lastname: Fukuzawa
mesh_terms: D003456:Cryptorchidism / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male; D013724:Teratoma / Q000175:diagnosis / Q000601:surgery*; D013736:Testicular Neoplasms / Q000175:diagnosis / Q000601:surgery*