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Papillary tumors of the pancreas: benign or malignant? In: Frantz VK, ed. Atlas of Tumor Pathology. Section VII, Fascicles 27\u201328: Tumors of the Pancreas. Washington (DC): Armed Forces Institute of Pathology; 1959: 32\u20133."},{"key":"2","doi-asserted-by":"crossref","unstructured":"2) Papavramidis T, Papavramidis S. Solid pseudopapillary tumors of the pancreas: review of 718 patients reported in English literature. J Am Coll Surg 2005; 200: 965\u201372.","DOI":"10.1016\/j.jamcollsurg.2005.02.011"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3) Tsukamoto M, Hashimoto D, Chikamoto A, et al. Clinical features and management of pancreatic solid pseudopapillary tumor. Am Surg 2014; 80: 1212\u20135.","DOI":"10.1177\/000313481408001222"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4) Hanada K, Kurihara K, Itoi T, et al. Clinical and pathological features of solid pseudopapillary neoplasms of the pancreas: a nationwide multicenter study in Japan. 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A review of clinicopathological characteristics and treatment of solid pseudopapillary tumor of the pancreas with 2450 cases in Chinese population. BioMed Res Int 2020; 2020: 2829647.","DOI":"10.1155\/2020\/2829647"},{"key":"9","doi-asserted-by":"crossref","unstructured":"9) Song H, Dong M, Zhou J, et al. Solid pseudopapillary neoplasm of the pancreas: clinicopathologic feature, risk factors of malignancy, and survival analysis of 53 cases from a single center. BioMed Res Int 2017; 2017: 5465261.","DOI":"10.1155\/2017\/5465261"},{"key":"10","doi-asserted-by":"crossref","unstructured":"10) Lee G, Sung YN, Kim SJ, et al. Large tumor size, lymphovascular invasion, and synchronous metastasis are associated with the recurrence of solid pseudopapillary neoplasms of the pancreas. HPB (Oxford) 2021; 23: 220\u201330.","DOI":"10.1016\/j.hpb.2020.05.015"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11) Wang X, Zhu D, Bao W, et al. Prognostic enigma of pancreatic solid pseudopapillary neoplasm: a single-center experience of 63 patients. Front Surg 2021; 8: 771587.","DOI":"10.3389\/fsurg.2021.771587"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12) Chen H, Huang Y, Yang N, et al. Solid-pseudopapillary neoplasm of the pancreas: a 63-case analysis of clinicopathologic and immunohistochemical features and risk factors of malignancy. Cancer Manag Res 2021; 13: 3335\u201343.","DOI":"10.2147\/CMAR.S304981"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13) Estrella JS, Li L, Rashid A, et al. Solid pseudopapillary neoplasm of the pancreas: clinicopathologic and survival analyses of 64 cases from a single institution. Am J Surg Pathol 2014; 38: 147\u201357.","DOI":"10.1097\/PAS.0000000000000141"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14) Yang F, Wu W, Wang X, et al. Grading solid pseudopapillary tumors of the pancreas: the Fudan Prognostic Index. Ann Surg Oncol 2021; 28: 550\u20139.","DOI":"10.1245\/s10434-020-08626-z"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15) Kang CM, Choi SH, Kim SC, et al. Predicting recurrence of pancreatic solid pseudopapillary tumors after surgical resection: a multicenter analysis in Korea. Ann Surg 2014; 260: 348\u201355.","DOI":"10.1097\/SLA.0000000000000583"},{"key":"16","doi-asserted-by":"crossref","unstructured":"16) Soloni P, Cecchetto G, Dall\u2019igna P, et al. Management of unresectable solid papillary cystic tumor of the pancreas: a case report and literature review. J Pediatr Surg 2010; 45: e1\u20136.","DOI":"10.1016\/j.jpedsurg.2010.02.045"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17) Tanoue K, Mataki Y, Kurahara H, et al. Multidisciplinary treatment of advanced or recurrent solid pseudopapillary neoplasm of the pancreas: three case reports. 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