title: Unusual manifestations of periarteritis nodosa.
mesh_terms: D000005:Abdomen; D001835:Body Weight; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008551:Melena / Q000209:etiology*; D008875:Middle Aged; D010146:Pain / Q000209:etiology*; D010488:Polyarteritis Nodosa / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy