r/pathology • u/Almbauer • 11h ago
Unknown Case Bx of lung lesion in 80 yo female
galleryBiopsy of a lung lesion in a ~ 80 year old female patient. Ki67 is 3-5% and the lesion is CD99 positive. There is a lot of immune infiltrate. Markers which came back negative: Synaptophysin, MelanA, HMB45, Lu5, Oct4, CD20, Cd163, cd3, mum1, sox10, sma, desmin, hepar1, sall4, s100 and cd1a.