title: Hyperlucent lung secondary to homocystinuria.
abstract: At 23 months of age, one of a pair of monozygotic twins with radiographic unilateral hyperlucent lung was evaluated by radionuclide ventilation/perfusion pulmonary studies, which revealed a ventilation/perfusion mismatch of an entire lung. This twin died, and autopsy revealed pulmonary arterial thrombosis and histological changes compatible with homocystinuria, which was subsequently shown to be present in the surviving twin as well. A ventilation/perfusion lung scan of the surviving twin revealed multiple ventilation/perfusion mismatched defects, suggestive of pulmonary embolism. The presenting manifestation of homocystinuria in these patients was the pulmonary thrombotic disease. Neither twin had any other stigmata of homocystinuria at the time of initial presentation.
authors.affiliation: University of California, Irvine Medical Center, Irvine, California, USA.
authors.forename: J
authors.initials: J
authors.lastname: Herman
authors.forename: J H
authors.initials: JH
authors.lastname: Miller
authors.forename: F
authors.initials: F
authors.lastname: Wang
mesh_terms: D004200:Diseases in Twins / Q000209:etiology*; D017809:Fatal Outcome; D005260:Female; D006712:Homocystinuria / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D008171:Lung Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D019275:Radiopharmaceuticals; D013668:Technetium Tc 99m Aggregated Albumin; D014055:Tomography, Emission-Computed; D014430:Twins, Monozygotic; D014980:Xenon Radioisotopes
chemical_list: D019275:Radiopharmaceuticals; D013668:Technetium Tc 99m Aggregated Albumin; D014980:Xenon Radioisotopes