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ANZ J Surg. 2013 Dec;83(12):985-90. doi: 10.1111/j.1445-2197.2012.06295.x. Epub 2012 Oct 16.

Mucinous cystic neoplasms of the pancreas with ovarian stroma.

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Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.



Mucinous cystic neoplasms (MCNs) of the pancreas are rare, but have recently been increasing in incidence. The aim of this retrospective clinical study was to elucidate the clinicopathological features and prognosis of MCNs with ovarian stroma at a single centre.


Using the presence of ovarian stroma as a requisite criterion for diagnosis of MCNs, the medical records of 47 surgically treated patients with MCNs from January 2004 to April 2011 were reviewed and classified according to the new 2010 World Health Organization classification.


Included were 37 cases of low-grade (78.7%), 4 intermediate-grade (8.5%) and 1 high-grade dysplasia (8.5%), and 5 cases of invasive carcinomas (10.6%). Patients were exclusively women (91.5%) with a mean age of 48.5 years. Most tumours were in the pancreatic body/tail (89.4%) with a mean size of 5.24 cm. More than half were asymptomatic. Findings associated with malignancy were presence of mural nodules (P < 0.001) and cyst wall calcifications (P = 0.017). All invasive MCNs were ≥5.0 cm or had mural nodules. No lymph node metastasis was seen in 20 cases of lymph nodes dissected. None of the 42 patients with non-invasive MCNs recurred after a mean follow-up of 25 months. However, two of five patients with invasive MCNs recurred, and one died within 2 years.


The prognosis of the resected non-invasive MCNs was excellent. Although resection should be considered for all cases, in low-risk MCNs (<5 cm and without nodules), nonradical resections (i.e. enucleations) are appropriate.


cystadenocarcinoma; cystadenoma; mucinous; pancreatic neoplasms; prognosis

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