Metastatic malignant teratoma arising from mediastinal nonseminomatous germ cell tumor: A case report

Jacob Collen*, Mark Carmichael, Tanya Wroblewski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Primary mediastinal nonseminomatous germ cell tumors (NSGCT) have a worse prognosis than gonadal germ cell tumors (GCTs). Malignant transformation of teratomatous components of GCT to a somatic malignancy is rare. We present a case of primary mediastinal NSGCT with malignant transformation of a teratoma in an active duty airman who presented with a 12-cm anterior mediastinal mass and vertebral body lesion. Pathology confirmed NSGCT with yolk sac and teratomatous components. Chemotherapy for GCT normalized serum tumor markers with little effect on the mediastinal mass. Incomplete resection of the residual tumor revealed high-grade mixed sarcoma. Serum tumor markers rose 3 months following resection with metastatic disease to bone and liver. Chemotherapy targeting sarcoma induced a partial response, but the patient developed acute myeloid leukemia refractory to chemotherapy. We discuss our approach to management of this complicated patient. Reprint &

Original languageEnglish
Pages (from-to)406-409
Number of pages4
JournalMilitary Medicine
Volume173
Issue number4
DOIs
StatePublished - Apr 2008
Externally publishedYes

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