title: [A case of idiopathic bronchial artery aneurysm connecting to the pulmonary artery].
abstract: Case. A 54-year old woman was found to have an abnormal shadow in a regular checkup chest X-ray film. We suspected a bronchial artery aneurysm based on a contrast-enhanced chest CT. Aortography, bronchial arteriography and pulmonary arteriography showed a bronchial artery aneurysm, 2 cm in diameter, connecting the right bronchial artery, inferior phrenic artery, and pulmonary artery. Bronchoscopy revealed dilatation and hypervascularity of moniliform submucosal vessels below the right truncus intermedius. She underwent bronchial artery embolization several times, but new feeding vessels developed each time. We considered this case required surgical resection. Bronchoscopy after aneurysmectomy revealed decrease of moniliform submucosal vessels. Histological examination revealed a three-layer structure leading to both the pulmonary and bronchial arteries. Conclusion. We diagnosed idiopathic bronchial artery aneurysm connecting to a pulmonary artery.
authors.affiliation: Division of Respiratory Medicine, Department of Internal Medicine, National Defense Medical College.
authors.forename: Tadasuke
authors.initials: T
authors.lastname: Shimokawaji
authors.forename: Hideo
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Syuichi
authors.initials: S
authors.lastname: Kawano
authors.forename: Soichiro
authors.initials: S
authors.lastname: Kano
authors.forename: Kazuo
authors.initials: K
authors.lastname: Motoyoshi
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Ozeki
mesh_terms: D000783:Aneurysm / Q000473:pathology / Q000532:radiotherapy*; D001981:Bronchial Arteries / Q000002:abnormalities; D005260:Female; D006801:Humans; D008875:Middle Aged; D011651:Pulmonary Artery / Q000002:abnormalities / Q000473:pathology*