title: [Primary retroperitoneal seminoma--a rare germ cell neoplasm].
abstract: A 44-year old male presented himself with left-sided abdominal pain. On clinical examination a painless, enlarged supraclavicular lymph node on the left side and small atrophic testes were detected. Ultrasonography revealed a huge retroperitoneal mass. By biopsy of the retroperitoneal tumor the diagnosis of a seminoma was made, but neither in the orchidectomy specimen of the right side nor in the testicular biopsy of the left side a primary tumor or a scar could be identified. Thus, the diagnosis of a extragonadal primary retroperitoneal seminoma was made. The patient responded well to the combined chemotherapy consisting of cisplatin, bleomycin and etoposide. For distinction from an occult and/or burned-out seminoma testicular biopsy or surgical exploration of the testes with histology are mandatory.
authors.affiliation: Medizinische Klinik Regionalspital Interlaken, Universität Bern.
authors.forename: P
authors.initials: P
authors.lastname: Berthold
authors.forename: M
authors.initials: M
authors.lastname: Brönnimann
authors.forename: E
authors.initials: E
authors.lastname: Wegmüller
mesh_terms: D000328:Adult; D001706:Biopsy; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D006801:Humans; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012187:Retroperitoneal Space / Q000473:pathology; D018239:Seminoma / Q000175:diagnosis* / Q000473:pathology; D013737:Testis / Q000473:pathology