title: Cryptorchism with a large abdominal mass--a challenge.
abstract: The undescended testis is associated with an increased incidence of testicular malignancy. The position of the undescended testis is related to the likelihood of carcinogenesis, with the intra-abdominal testis having the highest malignant potential. We present 3 patients to illustrate this tendency and to highlight the unusual presentation as an "acute abdomen".
authors.affiliation: Department of Surgery, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin.
authors.forename: C
authors.initials: C
authors.lastname: Cheng
authors.forename: P S
authors.initials: PS
authors.lastname: Chan
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology*; D000328:Adult; D000792:Angiography; D003456:Cryptorchidism / Q000150:complications*; D006801:Humans; D008297:Male; D018239:Seminoma / Q000473:pathology; D013736:Testicular Neoplasms / Q000209:etiology* / Q000473:pathology; D013737:Testis / Q000098:blood supply