[Bronchiolitis obliterans organizing pneumonia (BOOP) in Japan].
Twenty-nine patients with bronchiolitis obliterans organizing pneumonia (BOOP) in Japan diagnosed by an open lung biopsy were reviewed. A total of 70% of the patients were idiopathic and 2/3 of the remaining were associated with connective tissue disease. All 29 cases of BOOP showed bilateral pulmonary infiltration on chest X-rays. BOOP can be classified based on the chest X-ray findings into three major types, Type I, Type II and unclasSified type. In Type I shadows appear in the lung fields. In Type II abnormal shadows are seen in the bi-basilar peripheral field with the reduction of the lung volume. Cases of Type I showed inflammatory findings more frequently than cases of Type II. Among 29 BOOP patients, two idiopathic cases died.
Yamamoto
M
M
Second Department of Medicine, Nagoya City University Medical School, Japan.
Ina
Y
Y
Kitaichi
M
M
Harasawa
M
M
Tamura
M
M
D000328:Adult; D000367:Age Factors; D000368:Aged; D001989:Bronchiolitis Obliterans / Q000145:classification* / Q000000981:diagnostic imaging / Q000209:etiology; D003095:Collagen Diseases / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011859:Radiography