A representative field of a lung biopsy specimen from a child with lymphocytic interstitial pneumonitis (LIP), demonstrating a diffuse infiltrate of mature and immature lymphocytes, plasma cells, and histiocytes in the alveolar septae and pulmonary interstitium. Nodular formation of lymphocytes is also seen. Although fibrosis is not a typical feature, widening of the pleura with fibrous tissue is seen.
Courtesy of Cynthia Epstein, MD and Leland L Fan, MD.
Graphic 71770 Version 3.0
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