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Clinicopathological Features and Prognosis of Mucinous Cystic Neoplasm With Ovarian-Type Stroma

2010; Lippincott Williams & Wilkins; Volume: 40; Issue: 1 Linguagem: Inglês

10.1097/mpa.0b013e3181f749d3

1536-4828

Kenji Yamao, Akio Yanagisawa, Kuniyuki Takahashi, Wataru Kimura, Ryuichiro Doi, Noriyoshi Fukushima, Nobuyuki Ohike, Jiaqi Shi, Takashi Hatori, Bunsei Nobukawa, Michio Hifumi, Yuji Kobayashi, Kosuke Tobita, Satoshi Tanno, Masanori Sugiyama, Yoshihiro Miyasaka, Toshio Nakagohri, Taketo Yamaguchi, Keiji Hanada, Hideki Abe, Minoru Tada, Naotaka Fujita, Masao Tanaka,

Neuroendocrine Tumor Research Advances

Objective: The aim of this study was to elucidate the clinicopathological features and prognosis of mucinous cystic neoplasms (MCNs). Materials and Methods: We performed a multi-institutional, retrospective study on a collected series of patients with MCN pathologically defined by ovarian-type stroma. Clinicopathological features and prognosis were investigated. Result: Mucinous cystic neoplasm was confirmed in 156 cases, including 129 adenomas (82.7%) and 21 noninvasive (13.4%) and 6 invasive carcinomas (3.9%). Patients with MCN were exclusively women (98.1%) with the mean age of 48.1 years. All but 1 MCN were in the pancreatic body/tail region with a mean size of 65.3 mm. Communication between the cyst and the pancreatic duct was found in 18.1%. The 3-, 5-, and 10-year survival rates were 97.6%, 96.6%, and 96.6%, respectively. A significant difference in the survival rates was observed between adenomas and carcinomas and between minimally invasive carcinomas and invasive carcinomas. Cyst diameter and presence of mural nodule were predictive of malignant MCN. Conclusions: Mucinous cystic neoplasm is a rare but distinctive pancreatic cystic neoplasm with a favorable overall prognosis. All MCNs should be resected to prevent malignant changes but can be observed for an appropriate time when the lesion is small without the presence of mural nodules.