Renal cell carcinoma with unusual metastasis to the gallbladder |
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Authors: | Nojima Hiroyuki Cho Akihiro Yamamoto Hiroshi Nagata Matsuo Takiguchi Nobuhiro Kainuma Osamu Souda Hiroaki Gunji Hisashi Miyazaki Akinari Ikeda Atsushi Matsumoto Ikuko Asano Takehide Ryu Munemasa Nihei Naoki Maruoka Masayuki |
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Institution: | (1) Department of Gastroenterological Surgery, Chiba Cancer Center Hospital, 666-2 Nitona-chou, Chuo-ku, Chiba 260-8717, Japan;(2) Department of Urology, Chiba Cancer Center Hospital, Chiba, Japan |
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Abstract: | Gallbladder involvement in patients with renal cell carcinoma (RCC) is extremely rare. We present a report of a 61-year-old
man with a synchronous RCC metastasis to the gallbladder presenting as an intraluminal polypoid mass simulating primary gallbladder
carcinoma. Enhanced abdominal computed tomography demonstrated a well-enhanced polypoid lesion in the gallbladder. Intraoperative
rapid pathological examination of the gallbladder tumor showed clear cell-type cancerous cells. Microscopically, tumor cells
of both the resected kidney and gallbladder had round uniform nuclei, clear cytoplasm, and well-defined cytoplasmic borders,
forming alveolar patterns. Immunohistochemically, the tumor cells were negative for cytokeratin 7 (CK7) and carcinoembryonic
antigen (CEA), which is usually positive in primary clear cell carcinoma of the gallbladder. Therefore, the final diagnosis
was RCC with a synchronous gallbladder metastasis. |
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Keywords: | Renal cell carcinoma Gallbladder Metastasis |
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