title: A rare case of metastatic malignant melanoma to the colon from an unknown primary.
abstract: Metastatic melanoma from an unknown primary (MUP) is rare; its occurrence in the gastrointestinal tract is of exceedingly low prevalence. We report a case of a 73-year-old man with metastatic malignant melanoma to the colon from an unknown primary. The rarity of MUP and importance of screening for gastrointestinal metastasis in patients with malignant melanoma are discussed along with the role of surgical resection in improving prognosis and overall survival.
authors.affiliation: Department of Medicine, University of Arizona, Tucson, AZ 85721, USA.
authors.forename: Preethi
authors.initials: P
authors.lastname: Reddy
authors.affiliation: Department of Medicine, University of Arizona, Tucson, AZ 85721, USA ; Department of Medicine, University of Arizona Medical Center, 6th Floor, Room 6336, 1501 N. Campbell Avenue, Tucson, AZ 85719, USA.
authors.forename: Courtney
authors.identifier: 0000-0002-4558-2388
authors.initials: C
authors.lastname: Walker
authors.affiliation: Department of Medicine, University of Arizona, Tucson, AZ 85721, USA ; Division of Gastroenterology, Department of Medicine, University of Arizona, Tucson, AZ 85721, USA.
authors.forename: Bianca
authors.initials: B
authors.lastname: Afonso
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