precoccygeal啥意思？=尾骨前,大约在图里的红圈范围内(下端):

 

rectal cancer发生率占25%左右

 

Colon and Rectal Cancer

Definition of colon cancer: Cancer that forms in the tissues of the colon (the longest part of the large intestine). Most colon cancers are adenocarcinomas (cancers that begin in cells that make and release mucus and other fluids). 

Definition of rectal cancer: Cancer that forms in the tissues of the rectum (the last several inches of the large intestine closest to the anus).

Treatment

Information about treatment, including surgery, chemotherapy, radiation therapy, immunotherapy, and vaccine therapy

• Rectal Cancer Treatment (PDQ®)
  [ patient ] [ health professional ]
• Clinical Trials to Treat Rectal Cancer
• Drugs Approved for Colon and Rectal Cancer
• Cetuximab Combined with Oxaliplatin-Based Chemotherapy May Not Be Effective First-Line Treatment for Metastatic Colorectal Cancer

Information about methods of cancer detection including new imaging technologies, tumor markers, and biopsy procedures

• Colorectal Cancer Screening (PDQ®)
  [ patient ] [ health professional ]
• Tests to Detect Colorectal Cancer and Polyps
• Gut•check
• Clinical Trials to Screen for Colon Cancer
• Clinical Trials to Screen for Rectal Cancer
• Sigmoidoscopy Proves to Be Effective Screening Tool for Colorectal Cancer
• Colonoscopy Reduces Risk of Death from Colorectal Cancer in High-Risk Patients

Coping

Information about managing the physical and emotional effects of cancer and its treatment

• Coping with Cancer
• Complementary and Alternative Medicine

Clinical Trials

Information and current news about clinical trials and trial-related data

• Colon and Rectal Cancer Trial Results
• Clinical Trials for Colon Cancer
• Clinical Trials for Rectal Cancer
• How to Find a Cancer Treatment Trial: A 10-Step Guide
• Learn About Clinical Trials