title: Polycythemia and abdominal pain.
mesh_terms: D000005:Abdomen; D003937:Diagnosis, Differential; D006400:Hematocrit; D006801:Humans; D007238:Infarction / Q000473:pathology; D007422:Intestines / Q000098:blood supply; D008099:Liver / Q000098:blood supply; D008173:Lung Diseases, Obstructive / Q000175:diagnosis; D008297:Male; D008638:Mesenteric Arteries / Q000473:pathology; D008641:Mesenteric Vascular Occlusion / Q000175:diagnosis / Q000473:pathology; D008875:Middle Aged; D010146:Pain / Q000209:etiology*; D011087:Polycythemia Vera / Q000175:diagnosis* / Q000473:pathology; D013163:Splenomegaly / Q000175:diagnosis; D013927:Thrombosis / Q000175:diagnosis / Q000473:pathology