The grade ⅳ complications occurred in 2 patients, one of whom underwent repeated examinations and treatment for proctitis, and the other of whom was complicated with severe diabetes and received a laparocolostomy with cystostomy. Ⅳ级2例,1例因直肠炎在外院行多次检查和治疗,1例合并重度糖尿病,采用结肠腹壁造口,结合膀胱穿刺造瘘治疗,病情好转。