Copyright © 2017 American Academy of Pediatrics. From: Human Immunodeficiency Virus Infection97 Red Book® 2015, 2015 Figure Legend: Lung biopsy specimen showing mononuclear interstitial infiltration in a child with HIV infection and lymphoid interstitial pneumonitis/pulmonary lymphoid hyperplasia (LIP/PLH). The pathogenesis of LIP/PLH is poorly understood, but Epstein-Barr virus has been implicated as a co-factor in its development. Copyright Baylor International Pediatric AIDS Initiative/Mark Kline, MD, FAAP Date of download: 10/25/2017 Copyright © 2017 American Academy of Pediatrics. All rights reserved.