Mesenteric fibromatosis misdiagnosed with lymph node metastasis after successful laparoscopic right hemicolectomy: a report of two cases with review of literature

Peng Wang, Haitao Zhou, Zhixiang Zhou, Jianwei Liang Department of Colorectal Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, People’s Republic of China Abstract: Fibromatosis is a rare type of tumor derived from the mesenchymal tissue. This is a benign tumor with infiltrating growth but may invade locally and recur following excision. As one type of fibromatosis, mesenteric fibromatosis (MF) accounts for a mere 8% of cases. Although studies have revealed that the etiology of MF is related to trauma, surgery, hormones, and heredity, the specific etiology of fibromatosis remains unclear. With such low incidence, MF has been rarely reported and tends to be misdiagnosed due to insufficient recognition. In this paper, we describe the cases of two patients with MF who were misdiagnosed with lymph node metastasis and who had previously undergone successful laparoscopic right hemicolectomy. We provide this information in order to broaden the clinical understanding of MF. Keywords: mesenteric fibromatosis, laparoscopic right hemicolectomy, misdiagnosis, lymph node metastasis, colon cancer and Gardner’s syndrom