Capillary haemangiomatosis of the lungs

Abstract
A case of capillary hemangiomatosis affecting both lungs is presented. The angiomatous growth involved particularly the intralobular fibrous septa and appeared locally aggressive as it destroyed and obstructed the pulmonary veins and venules. Some pulmonary arteries and bronchi were affected to a lesser extent. Pulmonary venous obstruction sometimes simulating pulmonary veno-occlusive disease cause severe hemosiderosis and interstitial fibrosis. The clinical features and the lung biopsy erroneously suggested a diagnosis of primary pulmonary hemosiderosis. No comparable case was found in the literature.