TY - JOUR A2 - Hirata, Tetsuo AU - Simons, Malorie AU - Ferreira, Jason AU - Meunier, Rashna AU - Moss, Steven PY - 2016 DA - 2016/08/29 TI - Primary versus Metastatic Gastrointestinal Melanoma: A Rare Case and Review of Current Literature SP - 2306180 VL - 2016 AB - Gastrointestinal (GI) melanomas are a rare diagnostic entity. Although there have been cases of melanomas solely in the GI tract, many debate their true origin: the gut versus a distant, undetected primary lesion that regressed known as melanoma of unknown primary. We present a case that involved diagnosing a GI melanoma and then backtracking to find a possible primary source. We review the most recent literature regarding possible etiologies of primary GI melanomas and how to differentiate whether it has a primary, metastatic, or unknown origin. SN - 2090-6528 UR - https://doi.org/10.1155/2016/2306180 DO - 10.1155/2016/2306180 JF - Case Reports in Gastrointestinal Medicine PB - Hindawi Publishing Corporation KW - ER -