[Antineutrophil Cytoplasmic Antibody (ANCA) Negative Limited-form Granulomatosis with Polyangiitis of the Lung Diagnosed by the Thoracoscopic Lung Biopsy]

Hiroki Tomizawa, Katsuhiko Enomoto, Hirokazu Kurokawa, Hideki Kawai, Yoshitaro Saito, Ryo Demura
Kyobu Geka. the Japanese Journal of Thoracic Surgery 2018, 71 (9): 680-684
Antineutrophil cytoplasmic antibody (ANCA) negative pulmonary limited-form granulomatous with polyangiitis (GPA) is a rare type of GPA. A 53-year-old female had been followed as the possible pulmonary infarction of bilateral lungs for 4 years without any therapy. Chest computed tomography(CT) examination of the patient showed newly appeared nodular lesions in the lungs, which were suspected as malignancy by positron emission tomography (PET) -CT. Thoracoscopic lung biopsy of the lesions was performed and histopathological diagnosis was GPA showing multiple granulomas with vasculitis. Since both C and P-ANCA were negative and no evidence of kidney involvement, we finally diagnosed the lung lesions as ANCA negative limited-form GPA.

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