Abstract
While inguinal hernia is one of the most common diseases, and neoplasms of any organs are seen with great frequency, combinations of the two, i.e., hernial tumors are rare. A case of cholangiocarcinoma with metastasis to an inguinal hernial sac is reported. A 72-year-old Japanese man was admitted with a left inguinal hernia of 3 years' duration. His health was otherwise generally good. Herniorrhaphy was performed, and the redundant hernial sac was excised. The gross hernial sac specimen contained two tiny, white nodule-like thickened areas, and histological examination revealed an unexpected adenocarcinoma. After further examination, a diagnosis of cholangiocarcinoma with peritonitis carcinomatosa was made. Tumors of saccular type herniae are rare, and according to the results of a search of the English and Japanese literature, this is the first report of a case of cholangiocarcinoma that metastasized to an inguinal hernial sac.
