Rectal cancer - avoiding surgery?

Area of Science:

• Oncology
• Surgical Oncology
• Gastroenterology

Background:

• Nonoperative management of rectal cancer is increasingly adopted.
• Total neoadjuvant treatment (TNT) and watch and wait (WW) strategies are being explored for locally advanced rectal cancer.

Purpose of the Study:

• To evaluate the evolving landscape of nonoperative rectal cancer treatment.
• To discuss the benefits and risks associated with TNT and WW strategies.
• To compare current guideline recommendations regarding neoadjuvant treatment and surgical intervention.

Main Methods:

• Review of recent clinical trials and registry data on rectal cancer treatment.
• Analysis of disease-free survival, local recurrence rates, and distant metastases.
• Comparison of National Comprehensive Cancer Network (NCCN) and European Society for Medical Oncology (ESMO) guidelines.

Main Results:

• TNT demonstrated disease-free survival advantages in some trials.
• The RAPIDO trial indicated an increased local recurrence risk with TNT, suggesting surgery for nonresponders.
• A registry study showed a high regrowth rate and increased distant metastases with WW after complete clinical response.

Conclusions:

• While nonoperative approaches offer potential benefits, careful patient selection and monitoring are crucial.
• The risk of local recurrence and distant metastases necessitates ongoing evaluation of deferring surgery.
• Balancing treatment toxicities with surgical outcomes remains a key consideration in rectal cancer management.