Intra-abdominal fibromatosis following laparoscopic surgery for sigmoid colon cancer: A case report

Abstract

Introduction: Desmoid tumors, also known as aggressive fibromatosis, are rare, benign, non-inflammatory, and fibroblastic tumors. Characterized by their locally aggressive behavior and the potential for recurrence, these tumors do not metastasize. Intra-abdominal desmoid tumors comprise 8% of all desmoid tumors. Case Report: This paper presents a case of a 50-year-old male, highlighting the diagnostic challenge posed by the incidental discovery of an intra-abdominal mesenteric mass in a patient previously treated for stage I sigmoid colon cancer by laparoscopic proctocolectomy. Multidisciplinary consensus favored surgical intervention, successfully revealing and removing a benign desmoid-type fibromatosis. The occurrence of intra-abdominal desmoid tumors after laparoscopic surgery for colorectal cancer is exceptionally rare, underscoring the unique nature of this case. Conclusion: During post-operative follow-up for colon cancer, the discovery of an intra-abdominal mass is often initially regarded as a sign of cancer recurrence and metastasis. Radiologists and oncologists may not immediately consider alternative causes. The incidentally discovered desmoid-type fibromatosis emphasizes the necessity for vigilant monitoring and consideration of diverse pathologies during follow-up, especially in low-risk scenarios.