[Malignant fibrous histiocytoma of the chest wall in a nonagenarian].

We report a case of malignant fibrous histiocytoma of the chest wall observed in a 94-year-old woman. She noticed appetite loss and general edema a week before admission. The patient was diagnosed as having congestive heart failure due to valvular heart disease on the basis of echocardiographic findings and became symptom-free by treatment with vasodilators and diuretics. However, chest roentgenogram disclosed a extrapleural mass in the left mid-lateral chest. About 2 months after admission, she experienced left lateral chest pain for the first time. The chest CT scan revealed a 5 x 5 x 2 cm mass, adjacent to the lateral-posterior chest wall and projecting into the thoracic cavity and rib osteolysis. Gallium-67 citrate scintigram showed abnormal isotope accumulation in the left middle chest. Biopsy was not done. The therapeutic approach was mainly pain relief, and no tumor resection, chemotherapy, or radiotherapy was performed. The mass increased in size, and increasingly extended into the thoracic cavity on follow-up CT scans. Furthermore, marked invasion of the tumor to subcutis and subscapula was found. She died of cachexia and respiratory failure 34 weeks after admission. Histologic examination revealed malignant fibrous histiocytoma.