[Pulmonary malignant fibrous histiocytoma (inflammatory type) showing intracavitary fungus ball-like shadow].
We report a rare case of primary malignant fibrous histiocytoma of the lung showing intracavitary fungus ball-like shadows. Fiberoptic bronchoscopy revealed no visible tumor, but adenocarcinoma cells were detected in samples of lavage fluid from the cavitary lesion. Staging procedures (T 2 N 0 M 0) confirmed that there were no metastatic lesions. A complete resection of the left lower lobe was performed. The tumor showed polypoid growth that obstructed a small peripheral bronchus, and formed a cavitary lesion. It was histologically diagnosed as an inflammatory type of malignant fibrous histiocytoma, and consisted of atypical histiocyte-like cells, neutrophils, lymphocytes, foamy cells, and fibroblast-like cells in a storiform pattern. The patient has been in complete remission for 3 years after surgery.
Kobayashi
T
T
Department of Internal Medicine, Osaka Prefectural General Hospital, Japan.
Takenaka
M
M
Kido
T
T
Tanio
Y
Y
D018219:Histiocytoma, Benign Fibrous / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007249:Inflammation; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011859:Radiography