Presentation Information
[E4-1]Clinical value of CT 3D construction of pelvis and mesorectum in middle-low rectal carcinoma
Xiao-Cong Zhou1, Fei-Yue Ke2, Hao Chen2, Qiang Wang2, Gaurav Dhamija3, Ruchi Dharamshibhai Viroja4, Gui-Ping Chen1 (1.The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), 2.The Dingli Clinical Institute of Wenzhou Medical University (Wenzhou Central Hospital), 3.Ram Krishna Medical College Hospital and Research Centre, 4.Bhavsinhji General Hospital)
Background
Laparoscopic anus-preserving radical resection for middle-low rectal carcinoma is challenging due to the confined pelvic space and bulky rectal mesentery. Few studies have quantified pelvic and rectal mesenteric volumes using three-dimensional (3D) reconstruction. This study reconstructs and measures pelvic and rectal anatomy in 3D, analyzes sex-based differences, and assesses their impact on short-term surgical outcomes.
Methods
This retrospective study included 103 patients with middle-low rectal carcinoma undergoing laparoscopic low/ultra-low anterior resection from January 2018 to January 2024. Pelvic measurements from CT imaging and 3D reconstructions were analyzed. Pelvic volume and rectal mesenteric fat volume were compared between sexes, and their influence on surgical outcomes was evaluated.
Results
Significant sex-based differences were found in pelvic diameter, angle, volume, and rectal mesenteric fat volume (P<0.05). Males had smaller pelvic volume (P=0.007) but larger rectal mesenteric fat volume (P=0.047). Females had lower intraoperative blood loss (P<0.05), despite more prior abdominal surgeries (P<0.05).
Conclusions
3D reconstruction reveals sex-based anatomical differences, aiding in defining a difficult pelvis. This enhances preoperative planning and surgical outcomes in rectal cancer surgery.
Laparoscopic anus-preserving radical resection for middle-low rectal carcinoma is challenging due to the confined pelvic space and bulky rectal mesentery. Few studies have quantified pelvic and rectal mesenteric volumes using three-dimensional (3D) reconstruction. This study reconstructs and measures pelvic and rectal anatomy in 3D, analyzes sex-based differences, and assesses their impact on short-term surgical outcomes.
Methods
This retrospective study included 103 patients with middle-low rectal carcinoma undergoing laparoscopic low/ultra-low anterior resection from January 2018 to January 2024. Pelvic measurements from CT imaging and 3D reconstructions were analyzed. Pelvic volume and rectal mesenteric fat volume were compared between sexes, and their influence on surgical outcomes was evaluated.
Results
Significant sex-based differences were found in pelvic diameter, angle, volume, and rectal mesenteric fat volume (P<0.05). Males had smaller pelvic volume (P=0.007) but larger rectal mesenteric fat volume (P=0.047). Females had lower intraoperative blood loss (P<0.05), despite more prior abdominal surgeries (P<0.05).
Conclusions
3D reconstruction reveals sex-based anatomical differences, aiding in defining a difficult pelvis. This enhances preoperative planning and surgical outcomes in rectal cancer surgery.