Multiple cavernous hemangiomas of the lung: a case report and review of the literature.

Cavernous hemangiomas are benign vascular tumors most commonly seen in the head and neck region in childhood. They have been described rarely in the lungs. We describe a patient with incidental pulmonary nodules discovered at autopsy, which measured up to 0.9 cm and which were present in the lung parenchyma, as well as on the pleura. The nodules were composed of dilated vascular spaces lined by flattened bland cells. Immunohistochemical studies of the lining cells revealed CD34 and factor VIII immunoreactivity, consistent with a lesion of endothelial origin. Taken together, the gross, microscopic, and immunohistochemical findings support the diagnosis of multiple pulmonary cavernous hemangiomas.