title: Gastrointestinal stromal tumor (GIST) mistaken for pancreatic pseudocyst - case report and literature review.
abstract: A 74-year-old female patient underwent a Roux-en-Y cystjejunostomy for pancreatic pseudocyst developed several melena episodes and she was surgically reappraised. The main diagnostic concern was a pancreatic cystic neoplasm. A 12 × 8.0 × 5.0 cm retro-gastric lesion was resected and pathology report indicated an unsuspected gastrointestinal stromal tumor (GIST). The report aimed to describe an atypical presentation of GIST.
authors.affiliation: Internal Medicine Department - São Paulo Hospital, Federal University of São Paulo (UNIFESP) São Paulo, Brazil.
authors.forename: Cristiano de Assis Pereira
authors.initials: Cde A
authors.lastname: Hansen
authors.affiliation: Internal Medicine Department - São Paulo Hospital, Federal University of São Paulo (UNIFESP) São Paulo, Brazil.
authors.forename: Fábio Freire
authors.initials: FF
authors.lastname: José
authors.affiliation: Internal Medicine Department - São Paulo Hospital, Federal University of São Paulo (UNIFESP) São Paulo, Brazil.
authors.forename: Naiara Pedrassi Engracia Garcia
authors.initials: NP
authors.lastname: Caluz
keywords: Gastrointestinal stromal tumor; melena; pancreatic pseudocyst