Changes of Low Anterior Resection Syndrome and Balance Ability in Patients with Rectal Cancer.

This study is tracking how bowel function and physical balance change over time in patients newly diagnosed with rectal cancer — before, during, and after surgery and treatment. **You may be eligible if:** - You are 20 or older - You have been newly diagnosed with rectal cancer (not a recurrence) - You are aware of your diagnosis - You can communicate in Mandarin or Taiwanese - You have agreed to participate and signed the consent form **You may NOT be eligible if:** - Your rectal cancer has come back (recurrent cancer) - Your overall health and functioning score (Karnofsky Performance Scale) is below 80 Talk to your doctor to see if this trial is right for you.