Korean J Hepatobiliary Pancreat Surg.  2015 Aug;19(3):113-120. 10.14701/kjhbps.2015.19.3.113.

Branch duct intraductal papillary mucinous neoplasm of the pancreas: single-center experience with 324 patients who underwent surgical resection

Affiliations
  • 1Division of Hepato-Biliary and Pancreatic Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. drksc@amc.seoul.kr

Abstract

BACKGROUNDS/AIMS
International treatment guidelines for branch duct intraductal papillary mucinous neoplasm (BD-IPMN) of the pancreas have been proposed, for features associated with malignancy and invasiveness. We investigated the clinicopathological characteristics that are predictive of malignancy or invasiveness and disease recurrence.
METHODS
A review of 324 patients with resected and pathologically confirmed BD-IPMN, between March 1997 and December 2013, was conducted.
RESULTS
There were 144 (44.4%) low grade dysplasia (LGD), 138 (42.6%) intermediate grade dysplasia (IMGD), 17 (5.3%) high grade dysplasia (HGD), and 25 (7.7%) invasive carcinoma (invIPMC) cases. The 5-year survival rates were 98.1% for LGD, 95.3% for IMGD, 100% for HGD, and 71.8% for invIPMC. Through a univariate analysis, the male sex was associated with malignancy, and CA19-9 was related to both malignant and invasive IPMN. The high risk or worrisome features of the international guidelines were associated with both malignant and invasive IPMN: the total bilirubin of the head/uncinate lesion, tumor size, mural nodule, and the size of the main pancreatic duct (MPD). Through a multivariate analysis, the male sex, elevated CA19-9, mural nodule, and dilated MPD diameter were independently correlated with the malignant IPMN. The elevated CA19-9 and dilated MPD diameter were also correlated with invasive carcinoma. The patient age and the initial pathological diagnosis were strongly associated with disease recurrence following surgical resection.
CONCLUSIONS
The high risk or worrisome features in the current treatment guidelines for BD-IPMN are confined to the morphological characteristics of the disease. Patient factors and biological features should also be considered in order to develop optimal therapeutic or surveillance strategies.

Keyword

Intraductal papillary mucinous neoplasm; Branch duct; Pancreas; Malignancy

MeSH Terms

Bilirubin
Diagnosis
Humans
Male
Mucins*
Multivariate Analysis
Pancreas*
Pancreatic Ducts
Recurrence
Survival Rate
Bilirubin
Mucins

Figure

  • Fig. 1 Survival curve analysis. (A) The overall survival of patients with each type of dysplasia (low grade dysplasia [LGD], intermediate grade dysplasia [IMGD], high grade dysplasia [HGD] and invasive carcinoma [invIPMC]). The 5-year survival rate was 98.1% for LGD, 95.3% for IMGD, 100% for HGD, and 71.8% for invIPMC cases. (B) The overall survival of patients with non-invasive or invasive IPMN of the pancreas; the 5-year survival rate was 98.2% and 71.8%, respectively (p<0.001).


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