Abstract
Abstract Swyer-James (MacLeod) syndrome is an acquired form of unilateral hyperlucency of the lung and is characterized by the development of severe emphysema, bronchiectasis, and/or bronchiolitis obliterans. It may develop as a complication of repeated episodes of pulmonary infection resulting in bronchiolitis obliterans and obstruction of small airways. Most patients with Swyer-James (MacLeod) syndrome can be managed clinically, and the pathologic features of the syndrome have been described in only a few reports. Placental transmogrification of the lung is a rare histopathologic finding that has been described in patients with severe emphysema associated with cigarette smoking, congenital bullous emphysema, and fibrochondromatous hamartomas of the lung and is characterized by the development of peculiar structures in the pulmonary parenchyma that resemble placental villi. To our knowledge, placental transmogrification of the lung has not been previously described in patients with Swyer-James (MacLeod) ...
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