parametrial boost
Additional focused radiation dose delivered to the parametrial tissue in cervical cancer treatment to improve local control.
Full Definition
A parametrial boost is an additional radiation dose specifically targeted to the parametrial tissues (the connective tissue adjacent to the cervix and upper vagina) following completion of the primary radiation treatment course. This technique is commonly used in the definitive treatment of locally advanced cervical cancer when there is concern for parametrial involvement or when attempting to maximize local control. The boost can be delivered using external beam radiation therapy techniques or brachytherapy, depending on the clinical scenario and institutional preferences. The decision to deliver a parametrial boost is based on tumor characteristics, imaging findings, and response to initial treatment.
Usage
Usage note: Always specify the dose and technique when documenting parametrial boost treatments.
In Context
- "A parametrial boost of 5.4 Gy was delivered using intensity-modulated radiation therapy to address the area of suspected parametrial extension." — Radiation oncology note
- "The radiation oncologist recommended a parametrial boost given the T2b disease with obvious parametrial involvement on MRI." — Treatment planning