Adenocarcinoma arising within a testicular metastasis.
Teratoma with malignant transformation is defined as the emergence of a non-germ cell tumor from a teratoma. Although extremely rare in extraovarian sites, cases have been reported that involve primary extragonadal germ cell tumors with transformation to variants of sarcoma. We report a 54-year-old man who was found to have adenocarcinoma arising within a mature teratomatous retroperitoneal metastasis 15 years after treatment of a nonseminomatous testicular germ cell tumor. The tumor was successfully excised and he remains without evidence of disease.
Murphy
D P
DP
Department of Pathology, Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA.
Bancila
E
E
Ciocca
R G
RG
Cummings
K B
KB
Weiss
R E
RE
D000230:Adenocarcinoma / Q000473:pathology*; D018237:Germinoma / Q000556:secondary*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000473:pathology*; D012186:Retroperitoneal Neoplasms / Q000556:secondary*; D013736:Testicular Neoplasms / Q000473:pathology*