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  • Title: Clinical manifestations of granulomatosis with polyangiitis (Wegener's granulomatosis) in the upper respiratory tract seen by otolaryngologists in Japan.
    Author: Harabuchi Y, Kishibe K, Komabayashi Y.
    Journal: Clin Exp Nephrol; 2013 Oct; 17(5):663-666. PubMed ID: 23385778.
    Abstract:
    We studied 91 patients with granulomatosis with polyangiitis (GPA; Wegener's granulomatosis) who were dealt with by otolaryngologists in Japan. The upper respiratory tract (URT) alone was involved in 56%. Regarding findings of PR3-ANCA, histology and initial diagnosis, of the 40 patients in whom sites other than the URT were involved, 64 and 73% were positive for PR3-ANCA and histology, respectively. On the other hand, of 51 patients in whom only the URT was involved, only 49 and 31% were positive for PR3-ANCA and histology, respectively. With regard to diagnosis, definitive and probable diagnoses were made in 78 and 20%, respectively, of patients involving sites other than the URT. On the other hand, definitive and probable diagnoses were made in only 22 and 37%, respectively, of patients involving the URT alone; the Japanese diagnostic criteria were inapplicable to 41%. Of the 21 patients to whom the diagnostic criteria were inapplicable, 13 (62%) developed additional symptoms and signs during the observation period, and they then fulfilled the Japanese diagnostic criteria. Among these patients, 8 were MPO-ANCA-positive and 3 patients had 2 or more sub-lesions in the URT. If the diagnostic criteria included cases with MPO-ANCA (±) and 2 lesions in the URT, the diagnostic rates increased from 59 to 86% even though they were of limited form. Thus, about 60% of the patients with URT symptoms alone did not satisfy the Japanese diagnostic criteria at the initial visit.
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