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Pancreatic perivascular epithelioid cell tumour presenting with upper gastrointestinal bleeding. Case Rep Oncol Med 2015;2015: 431215.","DOI":"10.1155\/2015\/431215"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13) Mizuuchi Y, Nishihara K, Hayashi A, et al. Perivascular epithelial cell tumor (PEComa) of the pancreas: a case report and review of previous literatures. Surg Case Rep 2016; 2: 59.","DOI":"10.1186\/s40792-016-0186-x"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14) Collins K, Buckley T, Anderson K, et al. Perivascular epithelioid cell tumor (PEComa) of pancreas diagnosed preoperatively by endoscopic ultrasound-guided fine-needle aspiration: a case report and review of literature. Diagn Cytopathol 2017; 45: 59\u201365.","DOI":"10.1002\/dc.23599"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15) Zhang S, Chen F, Huang X, et al. Perivascular epithelial cell tumor (PEComa) of the pancreas: a case report and review of literature. 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