Malignant melanoma of the stomach in an elderly patient - Çubukçu, Erdem; Ölmez, Ömer Fatih; Özkan, Kanat; Pekgöz, Murat; Uğraş, Nesrin; Deligönül, Adem; Manavoğlu, Osman (Turkish Journal of Gastroenterology, 2014)