Journal List > J Rheum Dis > v.23(6) > 1064297

Lee, Choi, Oh, Choi, Yang, Lee, and Choi: Case of Follicular Bronchiolitis in Rheumatoid Arthritis

Abstract

Follicular bronchiolitis is an uncommon bronchiolar disorder that is characterized by the presence of hyperplastic lymphoid follicles with reactive germinal centers. The condition is associated with connective tissue diseases such as rheumatoid arthritis, Sjögren's syndrome, and immunodeficiency disorders. A 56-year-old man with rheumatoid arthritis was admitted to hospital with a progressively enlarging pulmonary nodule in the left upper lobe. A follow-up contrast tomography scan showed that the nodule had increased in size from 4.2 mm to 6.3 mm over a 3 month period. An open lung biopsy was performed to establish a definite pathologic diagnosis of the pulmonary nodule, which was suspected to be a lung malignancy. The nodule was diagnosed as follicular bronchiolitis based on the histopathology findings. We describe a patient with follicular bronchiolitis that was confirmed by an open lung biopsy, and is believed to have had rheumatoid involvement.

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Figure 1.
The chest radiograph revealed linear densities and small nodules bilaterally in the lower lung fields.
jrd-23-392f1.tif
Figure 2.
Chest computed tomography revealed (A) linear, reticular densities and ground glass opacities in the bilateral lower lung fields, as well as (B and C) a slightly increased nodule (that had increased in size from 4.2 mm to 6.3 mm) in the apicoposterior segment of the left upper lobe.
jrd-23-392f2.tif
Figure 3.
Histologic specimen showing (A) hyperplasia of the lymphoid follicle (H&E, ×40) and (B) a benign hyperplastic germinal center (H&E, ×100).
jrd-23-392f3.tif
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