I. Department Overview The Anorectal Surgery Department specializes in the diagnosis and treatment of various benign and malignant diseases of the colorectum, anus, and perianal region. Adhering to the treatment philosophy of "minimally invasive, precise, and patient-centered," we are committed to relieving patients' unspoken suffering and safeguarding intestinal health and quality of life. Members of the department's expert team: Feng Liuquan, Chen Weida, Liu Wenqing, Zou Boyuan, and Xia Xu have completed over 20,000 various anorectal surgeries. II. Scope of Diagnosis and Treatment Scope of Diagnosis and Treatment 1. Benign Anal Diseases · Hemorrhoids: Minimally invasive surgery for internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids (such as RPH, TST, HCPT) and sclerotherapy injection for hemorrhoidal bleeding. · Anal fistula: Precise surgery for various complex anal fistulas, with emphasis on preserving anal function. · Perianal abscess: One-stage radical resection to prevent recurrence and the formation of anal fistula. · Pilonidal sinus: Minimally invasive surgery and flap transfer surgery. · Rectovaginal fistula surgery. 2. Colorectal Tumors, Pelvic Tumors, Hernias, Acute Abdomen · Colorectal cancer: Standardized laparoscopic/Da Vinci robotic minimally invasive radical surgery, sphincter-preserving surgery for low rectal cancer, comprehensive treatment (chemotherapy, targeted therapy, immunotherapy), and full-course management. Surgery for various pelvic and presacral tumors. · Minimally invasive surgery for hernias. · Acute abdomen: Gastrointestinal perforation, intestinal obstruction, etc. 3. Functional and Inflammatory Bowel Diseases · Constipation: Evaluation and surgical treatment of intractable constipation (total colectomy). · Fecal incontinence: Biofeedback therapy, sphincter repair. · Rectal prolapse: Various suspension and fixation procedures via abdominal or perineal approaches. · Repair and reconstruction of anal trauma and anal malformations. · Surgical issues related to inflammatory bowel disease (IBD): Such as perianal lesions caused by Crohn's disease and surgical treatment of ulcerative colitis. 4. Others · Emergency management of rectal and anal foreign body removal and trauma.