Radiotherapy is a treatment that uses high doses of radiation to kill cancer cells and shrink tumors. In this trial, it is used as a primary treatment to target early-stage rectal cancer, aiming to reduce the size of the tumor or eliminate it entirely.

Transanal Surgery is a minimally invasive surgical procedure used to remove cancerous tissue from the rectum. In this trial, it is considered as an option for patients who have responded well to radiotherapy, allowing for the removal of any remaining cancer cells while preserving the rectum.

Systemic Treatment involves the use of medications that travel through the bloodstream to reach cancer cells throughout the body. This can include chemotherapy or other drug therapies that help to enhance the effects of radiotherapy and surgery, aiming to prevent the spread of cancer and improve overall treatment outcomes.

Watchful Waiting is a strategy where doctors closely monitor a patient’s condition without giving any immediate treatment. In this trial, it is used for patients who show a good response to radiotherapy, allowing doctors to observe if the cancer remains stable or continues to shrink without further intervention.

Rectal Cancer – Rectal cancer is a type of cancer that begins in the rectum, which is the last several inches of the large intestine before the anus. It often starts as a growth on the inner lining of the rectum, known as a polyp, which can become cancerous over time. In early stages, the cancer may be confined to the rectal wall, but as it progresses, it can invade deeper layers and spread to nearby lymph nodes. Symptoms may include changes in bowel habits, rectal bleeding, and abdominal discomfort. The progression of rectal cancer can vary, with some cases remaining localized while others may spread to distant organs. Early detection and monitoring are crucial for managing the disease effectively.