Abstract
A 78-years-old woman was admitted with a solitary pulmonary nodule (18mm by CT) and it's peripheral athelectasis in the left lower lobe. She complained of cough and low grade fever of two months duration, but at the time of admission she had no subjective symptoms. The nodule was homogenous with a sharp margin, and neither spicular formation nor pleural indentation was noted. Therefore, we could not make a final diagnosis of benign tumor, because of the peripheral change. She underwent left lower lobectomy and hilar lymph node dissection. Histological diagnosis of the node was sclerosing hemangioma and that of the peripheral lung was pneumonitis with epithelioid cell granuloma. It is rare for benign lung tumors to cause peripheral atelectasis and/or pneumonitis, even relatively large ones. From data of lung cancer cases, bronchial changes probably need to include peripheral pulmonary atelectasis and pneumonitis.To treat pulmonary tumor, we have to consider that benign tumor may include peripheral atelectasis and/or pneumonitis even relatively small sized cases.
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