Clinicodemographic and tumor characteristics of patients who developed peritoneal metastases following surgical resection for IPMN based on PUBMED-indexed reports up to October 1st, 2019.

Prevalence of peritoneal metastases following surgical resection of intraductal papillary mucinous neoplasm (IPMN) are not well known. We hypothesized that higher degree of dysplasia would correlate with higher rates of PM. Clinicodemographic and tumor characteristics in patients who developed peritoneal metastases following surgical resection for IPMN was extracted from PUBMED-indexed articles up to October 1st, 2019. Of 3,580 reported patients that underwent resection for IPMNs across 30 included articles, PM occurred in 117 (3.3%). We found that 4/1884 (0.2%) patients with LGD/IGD developed PM, 13/745 (1.7%) patients with HGD developed PM, while 79/947 (8.3%) patients with invasive carcinoma arising from IPMN developed PM.