%0 Case Reports %T [A Case of Giant Abdominal Desmoid Tumor in a Young Man]. %A Suzuki A %A Fujita Y %A Umeno H %A Sato T %A Sakai B %A Iwamoto R %A Suto Y %A Ikeshita T %A Tokunou K %A Kawaoka T %A Tamesa T %A Akiyama N %A Yamamoto S %J Gan To Kagaku Ryoho %V 50 %N 1 %D Jan 2023 %M 36759993 暂无%X Desmoid tumor is a rare tumor of the soft tissue. The frequency of occurrence is 2.4 to 4.3 cases per year per million people, which is a very rare disease. We experienced a huge intra-abdominal desmoid tumor which is thought to be the primary mesentery. The case was a male in his 20s. He visited a nearby doctor with a complaint of abdominal bloating and abdominal pain. Abdominal contrast CT revealed a huge abdominal mass with a clear boundary of 35×25 cm in size extending from the upper right abdomen to the pelvis. Surgery was performed with a diagnosis of an intra-abdominal mass. Open abdominal tumor resection. Due to infiltration into the duodenum, transverse colon, and pancreas, right hemicolectomy and duodenal combined resection were performed. The pathological diagnosis was a diagnosis of desmoid tumor.