Histological variability and consequences in chronic bird-related hypersensitivity pneumonitis

Respirology : Official Journal of the Asian Pacific Society of Respirology
Junichi OchiY Yoshizawa

Abstract

Lobar and temporal histological variability in chronic bird-related hypersensitivity pneumonitis (BRHP) has not been clearly elucidated. This study was designed to evaluate the spatio-temporal histopathological variability in chronic BRHP. Fifty-two patients with chronic BRHP who underwent a surgical lung biopsy (SLB) between 1992 and 2008 were evaluated. The histopathological characteristics of the lung biopsy specimens were classified by the 2002 American Thoracic Society/European Respiratory Society (ATS/ERS) consensus classification of idiopathic interstitial pneumonias (IIPs). Autopsy specimens from seven patients were also evaluated to examine the serial changes from SLB to autopsy. In a study of lobar histological variability based on the findings of SLB, 7 patients were diagnosed with cellular nonspecific interstitial pneumonia (NSIP) pattern, 16 with fibrotic NSIP pattern, 20 with fibrotic NSIP pattern and usual interstitial pneumonia (UIP) (discordant UIP) pattern and 9 with UIP (concordant UIP) pattern. In a study of sequential changes, specimens of SLBs with fibrotic NSIP pattern changed to a bronchiolocentric interstitial pneumonia (BIP) pattern or UIP pattern. Interlobar and intralobar histological variability is ...Continue Reading

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Citations

May 18, 2020·Lung·Francesco VaroneLuca Richeldi
Feb 2, 2020·Surgical Pathology Clinics·Yoshiaki Zaizen, Junya Fukuoka

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