Partially Ablative Radiotherapy for Bulky Tumors: A Narrative Review of a Developing Concept

Area of Science:

• Oncology
• Radiation Oncology
• Medical Physics

Background:

• Large, bulky tumors pose significant management challenges due to limited palliative options, resistance to chemotherapy, and limitations of conventional radiotherapy.
• Conventional photon radiotherapy is often ineffective for these tumors owing to radioresistance, large treatment fields, and risks of normal tissue toxicity.

Purpose of the Study:

• To review the rationale, evidence, and future directions for partial ablative radiotherapy (PART) in managing challenging tumor presentations.
• To explore PART as a potentially more effective radiation treatment for palliation and local control.

Main Methods:

• This narrative review synthesizes existing literature on partial ablative radiotherapy (PART).
• It examines the principles of advanced radiation delivery techniques enabling dose escalation to the tumor core.
• The review discusses current studies, safety profiles, and treatment responses observed with PART.

Main Results:

• Partial ablative radiotherapy (PART) utilizes advanced delivery techniques to target the central tumor with high doses.
• It aims to maintain a low peripheral dose, sparing adjacent organs at risk.
• Preliminary studies and case reports suggest notable treatment responses and favorable safety profiles.

Conclusions:

• Partial ablative radiotherapy (PART) presents a novel strategy to enhance radiotherapy effectiveness for large, bulky tumors.
• Further research and larger studies are needed to fully establish its role and optimize its application.
• PART holds potential for improved symptom palliation and local tumor control in challenging oncological cases.