title: First case in the literature: lymphomatoid granulomatosis presenting as an abdominal mass.
mesh_terms: D000005:Abdomen; D003937:Diagnosis, Differential; D005260:Female; D006099:Granuloma / Q000473:pathology*; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis* / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012157:Mononuclear Phagocyte System / Q000473:pathology; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis*