[Seasonal melena].
D003937:Diagnosis, Differential; D004381:Duodenal Ulcer / Q000175:diagnosis; D006801:Humans; D008297:Male; D008551:Melena / Q000209:etiology*; D008875:Middle Aged; D011696:Purpura, Thrombocytopenic / Q000150:complications* / Q000175:diagnosis; D012621:Seasons
Melena estacional.