Clinical diagnosis and management of pancreatic mucinous cystadenoma and cystadenocarcinoma: Single-center experience with 82 patients

Zhi-Ming Zhao, Nan Jiang, Yuan-Xing Gao, Zhu-Zeng Yin, Guo-Dong Zhao, Xiang-Long Tan, Yong Xu, Rong Liu
World Journal of Gastrointestinal Oncology 2020 June 15, 12 (6): 642-650

BACKGROUND: Mucinous cystic neoplasm (MCN) of the pancreas is characterized by mucin-producing columnar epithelium and dense ovarian-type stroma and at risk for malignant transformation. Early diagnosis and treatment of MCN are particularly important.

AIM: To investigate the clinical characteristics of and management strategies for pancreatic mucinous cystadenoma (MCA) and mucinous cystadenocarcinoma (MCC).

METHODS: The clinical and pathological data of 82 patients with pancreatic MCA and MCC who underwent surgical resection at our department between April 2015 and March 2019 were retrospectively analyzed.

RESULTS: Of the 82 patients included in this study, 70 had MCA and 12 had MCC. Tumor size of MCC was larger than that of MCA ( P = 0.049). Age and serum levels of tumor markers carcinoembryonic antigen (CEA), carbohydrate antigen (CA) 19-9, and CA12-5 were significantly higher in MCC than in MCA patients ( P = 0.005, 0.026, and 0.037, respectively). MCA tumor size was positively correlated with serum CA19-9 levels ( r = 0.389, P = 0.001). Compared with MCC, MCA had a higher minimally invasive surgery rate ( P = 0.014). In the MCA group, the rate of major complications was 5.7% and that of clinically relevant pancreatic fistula was 8.6%; the corresponding rates in the MCC group were 16.7% and 16.7%, respectively.

CONCLUSION: Tumor size, age, and serum CEA, CA19-9, and CA12-5 levels may contribute to management of patients with MCN. Surgical resection is the primary treatment modality for MCC and MCA.

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