title: A case of chondrosarcoma developing in a recurrent retroperitoneal mass after chemotherapy for testicular germ cell tumor.
abstract: Teratomas with malignant transformation occur in a small proportion of patients with metastatic germ cell tumors treated with platinum-based chemotherapy. Chondrosarcoma has rarely been reported as a component of the second non-germ cell malignancy. We report the case of a 37-year-old man who developed a chondrosarcoma in a recurrent retroperitoneal mass after chemotherapy for testicular germ cell tumor. Malignant transformation of the retroperitoneal teratomatous mass occurred in the absence of any symptoms or clinical signs, elevation in serum tumor markers, or the presence of atypical elements in previously resected specimens, suggesting the need for close radiographic follow-up of these patients.
authors.affiliation: Department of Medicine, University Hospital, Patras Medical School, Rion, Patras, Greece.
authors.forename: Stelios F
authors.initials: SF
authors.lastname: Assimakopoulos
authors.forename: Angelos
authors.initials: A
authors.lastname: Koutras
authors.forename: Panayiota
authors.initials: P
authors.lastname: Ravazoula
authors.forename: Thomas
authors.initials: T
authors.lastname: Makatsoris
authors.forename: Theodore
authors.initials: T
authors.lastname: Petsas
authors.forename: Gregoris
authors.initials: G
authors.lastname: Iconomou
authors.forename: Vassiliki
authors.initials: V
authors.lastname: Nikolopoulou
authors.forename: Haralabos P
authors.initials: HP
authors.lastname: Kalofonos
mesh_terms: D000328:Adult; D002813:Chondrosarcoma / Q000175:diagnosis*; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis*; D009373:Neoplasms, Germ Cell and Embryonal / Q000188:drug therapy*; D016609:Neoplasms, Second Primary / Q000175:diagnosis*; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis*; D013736:Testicular Neoplasms / Q000188:drug therapy*