Multiple sclerosing hemangiomas of the lung

A case of multiple "sclerosing hemangiomas" of the lung is reported. A 48-year-old housewife had several coin lesions in the right lower lung field, which were detected in a mass survey examination. There were no definite symptoms or signs except for hemoptysis. The resected right lower lobe of the lung contained innumerable lesions varying in size from microscopic to 3.7 cm in diameter, all of which were diagnosed as "sclerosing hemangioma." Although larger nodules revealed hemorrhagic, solid, papillary, and sclerotic features, smaller lesions, particularly minute ones, tended to be composed only of epithelial cells arranged in papillary patterns and so-called pale cells in solid areas, both of which are suggested to be main components of sclerosing hemangioma. Some lesions were associated with tumorlet or adenomatous hyperplasia (or adenoma) probably of the type 2 epithelial cell. It is not certain from this case study whether the lesions were multicentric in origin or intralobar metastases from one primary lesion. The patient's postoperative course was uneventful, and there is no evidence of recurrence 2 years after surgery.