A small mucinous cystadenocarcinoma of the liver detected by a fluid-fluid level on ultrasonography |
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Authors: | Shinya Adachi Mikio Doy Hiroko Tsunoda-Shimizu Azusa Ozaki |
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Institution: | (1) Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba-shi, 305 Ibaraki, Japan;(2) Department of Surgery, Kinu Medical Association Hospital, 13-3 Araigi, Mitsukaido, 303 Ibaraki, Japan;(3) Department of Radiology, Kinu Medical Association Hospital, 13-3 Araigi, Mitsukaido, 303 Ibaraki, Japan;(4) Department of Pathology, Tsukuba Medical Center Hospital, 1-3-1 Awakubo, Tsukuba, 305 Ibaraki, Japan |
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Abstract: | A case of small, borderline malignant biliary mucinous cystic tumor is presented. The patient initially presented to us 18 months earlier to undergo a sigmoid colon resection for sigmoid colon cancer. At that time, a liver cyst measuring 18×12mm was detected. On a follow-up abdominal ultrasonography study for colon cancer, the liver cyst had enlarged to 21mm in diameter and contained a fluid-fluid level 18 months after surgery. Histological examination of a needle biopsy specimen indicated possible adenocarcinoma. Lateral segmentectomy of the liver was performed. Histopathologically, the tumor was diagnosed as a mucinous cystic tumor, of border line malignancy, which had originated from a bile duct gland. It contained both mucinous and serous components, which were thought to have caused the formation of a fluid-fluid level within the cyst. In this case, the fluid-fluid level demonstrated by ultrasonography was beneficial in the early detection of a cystic tumor of the liver. This case may be the smallest reported cystadenocarcinoma of the liver yet published. |
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Keywords: | mucinous cystic tumor fluid-fluid level bile duct gland ultrasonography cystadenocarcinoma |
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