Abstract
We report a case of intraabdominal desmoid-type fibromatosis, pathologically diagnosed after surgical resection of a mass that appeared on the cut surface of a previous hepatectomy. A 57-year-old man, diagnosed with cholangiocellular carcinoma (CCC) and gastroesophageal varices, had undergone a median hepatectomy and Hassab's operation in September 2011. Six months later, a follow-up CT showed a small mass near the cut surface of the previous hepatectomy. This mass, which grew gradually, was suggestive of local recurrence of CCC. The patient underwent laparotomy in July 2013 for definitive diagnosis and treatment. The tumor, 5 cm in size, was located at the caudal-medial side of the lateral segment of the liver and involved the cut edge of the round ligament. It was extirpated without combined resection of any other organ other than the adjacent liver. The resected specimen showed a white, solid cut surface with clear boundaries, measuring 5 cm at its maximum diameter. Histological findings and immunochemical staining showed the tumor to be composed of spindle cells with scant mitosis and a collagen fiber stroma. On the basis of this, desmoid-type fibromatosis was diagnosed. The patient, who had no relative with history suggestive of familial adenomatous polyposis (FAP), has survived without any recurrence for 2 years and 3 months since the resection.
