J Yeungnam Med Sci.  2022 Jul;39(3):250-255. 10.12701/yujm.2021.01256.

Pedunculated mucinous cystic neoplasm of the liver: a case report

• Ha SW
• Hwang S
• Han H
• Han SI
• Hong SM

• KMID: 2532079
• DOI: http://doi.org/10.12701/yujm.2021.01256

Abstract

In 2010, the World Health Organization classified mucin-producing bile duct tumors of the liver into two distinct entities; mucinous cystic neoplasm of the liver (MCN-L) and intraductal papillary mucinous neoplasm of the bile duct. We present the case of a patient with MCN-L having a uniquely pedunculated shape. A 32‐year‐old woman was referred to our institution with a diagnosis of biliary cystic neoplasm. She had undergone left salpingo-oophorectomy for ovarian cancer 15 years ago. Imaging studies showed an 8 cm-sized well defined, multiloculated cystic lesion suggesting a mucinous cystic neoplasm. The cystic mass was pedunculated at the liver capsule and pathologically diagnosed as MCN-L. The mass was resected with partial hepatectomy. The patient recovered uneventfully. She was discharged 7 days postoperatively. The patient has been doing well for 6 months after the operation. The patient will be followed up annually because of the favorable postresection prognosis of MCN-L.

Keyword

Cystic neoplasm; Intraductal papillary neoplasm; Mucins; Ovarian-like stroma; WHO classification