Radiation for Hodgkin's lymphoma in young female patients: a new technique to avoid the breasts and decrease the dose...

Area of Science:

• Radiation Oncology
• Medical Physics
• Oncology

Background:

• Hodgkin's lymphoma treatment in young females requires careful radiation planning to minimize long-term side effects.
• Protecting organs at risk, such as the breasts and heart, is crucial for reducing secondary cancer risks and cardiac complications.

Purpose of the Study:

• To evaluate the efficacy of an inclined board technique in reducing the irradiated volume of the breasts and heart.
• To compare the dosimetric benefits of inclined board positioning versus conventional flat positioning for Hodgkin's lymphoma radiotherapy.

Main Methods:

• A custom inclined board was developed for patient positioning, incorporating immobilization devices.
• Eight female patients with early-stage Hodgkin's lymphoma underwent treatment planning using both conventional flat and inclined board positions.
• Dose-volume histograms were analyzed to compare the mean V30 and V5 for the breasts and heart.

Main Results:

• The inclined board technique led to a substantial decrease in the mean V30 for the right breast (3% to 0%), left breast (3% to 0.4%), and heart (13% to 5%).
• Mean V5 values also decreased significantly: right breast (6% to 2%), left breast (13% to 8%), and heart (36% to 29%).

Conclusions:

• The inclined board technique offers superior sparing of the breasts and heart compared to conventional flat positioning.
• This simple, effective method maintains target coverage and total lung dose, improving the safety profile of radiotherapy for young female Hodgkin's lymphoma patients.