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Radiologia Brasileira

On-line version ISSN 1678-7099


LOUZA, Guilherme Felix et al. Lymphocytic interstitial pneumonia: computed tomography findings in 36 patients. Radiol Bras [online]. 2020, vol.53, n.5, pp.287-292.  Epub Oct 02, 2020. ISSN 1678-7099.


To analyze the computed tomography (CT) findings of lymphocytic interstitial pneumonia (LIP).

Materials and Methods:

We retrospectively reviewed the clinical and CT findings of 36 patients with LIP, including 25 women and 11 men, with a mean age of 52.5 years (age range, 22-78 years).


The main associated diseases with LIP were Sjögren syndrome (42%), human immunodeficiency virus infection (17%), amyloidosis (17%), Sjögren syndrome associated with secondary amyloidosis (11%), idiopathic (8%), and systemic lupus erythematosus (5%). The predominant CT abnormalities were multiple cystic airspaces (n = 35), small nodules (n = 15), ground-glass opacities (n = 13), bronchiectasis and/or bronchiolectasis (n = 8), and thickening of the bronchovascular bundles (n = 8). Other CT findings included reticular opacities (n = 7), calcified nodules (n = 4), airspace consolidation (n = 4), emphysema (n = 3), honeycombing (n = 3), lymph node enlargement (n = 2), mosaic attenuation pattern (n = 1), and cavitated nodules (n = 1).


The main CT findings of LIP were multiple cysts, small nodules, and ground-glass opacities.

Keywords : Lymphocytic interstitial pneumonia; Lung cysts; Computed tomography.

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