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ABDOMEN / Hepatobiliary   82 / F,  Incidentally detected GB lesion
2018-06-16
About Author
Authors Sang Won, Kim
Institution Kyung Hee University Hospital at Gangdong
E-mail rad2000@daum.net
About Case
Chief complaint
or Title
Incidentally detected GB lesion
Subspecialty ABDOMEN / Hepatobiliary
Classification Neoplasm, benign / cyst
Age 82 Sex F
Difficulty For resident, For specialist
Modality CT
Case Figures
Click above Figure for more images.
Questions
What’s your diagnosis?
Answer
Diagnosis Mucinous cystic neoplasm (MCN)
Comments


MCN


Previously known as hepatobiliary cystadenoma/cystadenoca.


Very rare in GB: first report (Simmons et al., in1989)


Pathology


Lining epithelium: mucin-rich columnar cells + ovarian stroma


± atypical tumor cells






Gross pathology & radiologic
appearances


Multilocular cystic mass within the GB wall


May similar to MCN in the liver, bile duct, and pancreas


May mimic appearance of adenomyomatosis


DDx: Adenomyomatosis (linear arrangement)

           MCN (more large &
multilocular appearance)





References Terada T, Takeuchi T, Taniguchi M. Hepatobiliary cystadenocarcinoma with cystadenoma elements of the gall bladder in an old man. Pathol Int. 2003 Nov;53(11):790-5.
Rooney TB, Schofer JM, Stanley MD, Banks SL. Biliary cystadenoma of the gallbladder. AJR Am J Roentgenol. 2005 Dec;185(6):1571-2.
Keywords gallbladder, mucinous cystic neoplasm (MCN)
Attachment File -

Number of Applicants : 35
Correct Answer 16
Higashi-Ohmi General Medical Center Akitoshi Inoue
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