[Gallbladder cancer revealed by melena].
D002277:Carcinoma / Q000150:complications*; D005706:Gallbladder Neoplasms / Q000150:complications*; D006801:Humans; D008297:Male; D008551:Melena / Q000209:etiology*; D008875:Middle Aged
Cancer de la vésicule biliaire révélé par un melaena.