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Biliary deposition of Liesegang rings presenting as a polypoid mass in the liver: Previously unrecognized lesion
Author(s) -
Onodera Manabu,
Sato Yasunori,
Ikeda Hiroko,
Zen Yoh,
Sakai Seisyo,
Syoji Masao,
Sakamoto Koya,
Tani Takashi,
Asaka Masahiro,
Nakanuma Yasuni
Publication year - 2009
Publication title -
pathology international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 74
eISSN - 1440-1827
pISSN - 1320-5463
DOI - 10.1111/j.1440-1827.2009.02409.x
Subject(s) - pathology , lesion , choledochal cysts , medicine , anatomy , bile duct , common hepatic duct , cyst
Liesegang rings (LR) are acellular, laminated structures that may be deposited within and around cysts and inflamed or necrotic tissue. Previous reports have shown that the kidney and breast are commonly affected organs of LR. Herein is reported a rare case of biliary deposition of LR presenting as a tumor‐like polypoid mass in the liver. A 70‐year‐old man was found to have a cystic lesion, measuring 3.0 cm in diameter, in the lateral segment of the liver. The lesion was accompanied by a solid mass, 1.8 cm in diameter, within the cystic cavity. Lateral segmentectomy of the liver was performed because clinical examinations could not exclude the possibility of hepatobiliary cystadenoma or cystadenocarcinoma. Pathology of the resected specimen indicated a soft polypoid mass, connecting to the cystically dilated bile duct with elongated stalk‐like structures. Histologically the surface of the mass was covered by non‐neoplastic biliary‐type epithelium. Beneath the epithelium, extensive deposition of numerous ring‐like laminated structures, which exhibited an identical appearance to LR, was observed. This is a unique and previously unrecognized lesion involving the occurrence of LR deposition in the hepatobiliary tracts, which further formed a grossly visible mass resembling a hepatic tumor.