cases, lung Week 159: Case 3 April 26, 2023 pathadmin 1. Presented by Fred Askin, M.D. and prepared by Sharon Swierczynski, M.D., Ph.D.The patient is a 40 year-old woman with patchy interstitial infiltrates in multiple lobes of the lung. An open lung biopsy was performed.Usual interstitial pneumonitis (UIP) patternDesquamative interstitial pneumonia (DIP)Extrinsic allergic alveolitisLymphoid interstitial pneumonitis (LIP) 1. Presented by Fred Askin, M.D. and prepared by Sharon Swierczynski, M.D., Ph.D.The patient is a 40 year-old woman with patchy interstitial infiltrates in multiple lobes of the lung. An open lung biopsy was performed.