Pulmonary Teratoma with Malignant Transformation

Abstract

A rare case of pulmonary teratoma with malignant transformation that occurred in a 58-year-old man is reported. The patient was treated initially with lobectomy. The tumor was composed of well-differentiated adenocarcinoma and mature teratomatous tissue that included squamous epithelium, sebaceous glands, cartilage, and pancreatic tissue. The patient developed recurrent adenocarcinoma in the lung 3 years later and was also found to have a renal cell carcinoma. Both the renal tumor and recur rent lung tumor were resected and adjuvant chemotherapy was given. He died of brain metastasis and further lung recurrence 9 months later.