We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress hp
Sign In
Advertise with Us
GLOBETECH PUBLISHING LLC

Download Mobile App




HypoFractionated RT Following Mastectomy Found Effective

By MedImaging International staff writers
Posted on 17 May 2017
A new study shows that a three-week course of radiation therapy (RT) following mastectomy is safe and cuts treatment time in half.

Researchers at Rutgers Cancer Institute, Memorial Sloan-Kettering Cancer Center, and other institutions conducted a prospective study involving 67 women with stage II to IIIa breast cancer to evaluate if postmastectomy radiation therapy (PMRT) completed in just 15 treatment days is as effective as conventional PMRT that takes approximately 5-6 weeks to complete. Early RT stopping criteria was predefined based on known toxicity thresholds.

The results showed that after a median follow up of 32 months, no grade three toxicities or higher were reported. There were 29 grade two toxicities, with a majority being skin rash followed by fatigue, similar to that experienced with conventional PMRT. Three-year estimated local recurrence-free survival was 89.2%, and 3-year estimated distant recurrence-free survival was 90.3%. The total rate of implant loss or failure was 24%, and the unplanned surgical correction rate was 8%, for a total complication rate of 32%. The study was published on May 1, 2017, in the Journal of Clinical Oncology.

“When there is a concern that cancer cells may remain in the chest wall and lymph node regions following a mastectomy, a patient may be given targeted radiation over a five to six week period to further treat the breast cancer,” said senior author Professor Bruce Haffty, MD, of Rutgers Cancer Institute. “Receiving radiation for that long of a period becomes a quality of life issue for many patients. This includes the inconvenience of frequent travel to the treatment facility, as well as fatigue and other common side effects that can cause lost time at work and other challenges.”

In standard chest wall irradiation, the therapeutic ratio of RT derives from differences in late-reacting normal tissues, which are more sensitive to high dose per fraction, versus rapidly proliferating tumor cells, which are less responsive to changes in fraction size. Thus, high cumulative doses of radiation are needed for tumor control, but daily fraction size has to be respectful of the sensitivity of normal tissues in the treated volume. Interestingly, breast cancer cells seem to possess fraction sensitivities similar to normal tissues, and so the primary rationale for prolonged fractionation is not applicable.

Ultrasound Imaging System
P12 Elite
New
Diagnostic Ultrasound System
DC-80A
Digital X-Ray Detector Panel
Acuity G4
New
High-Precision QA Tool
DEXA Phantom

Channels

Ultrasound

view channel
Image: The new implantable device for chronic pain management is small and flexible (Photo courtesy of The Zhou Lab at USC)

Wireless Chronic Pain Management Device to Reduce Need for Painkillers and Surgery

Chronic pain affects millions of people globally, often leading to long-term disability and dependence on opioid medications, which carry significant risks of side effects and addiction.... Read more

Imaging IT

view channel
Image: The new Medical Imaging Suite makes healthcare imaging data more accessible, interoperable and useful (Photo courtesy of Google Cloud)

New Google Cloud Medical Imaging Suite Makes Imaging Healthcare Data More Accessible

Medical imaging is a critical tool used to diagnose patients, and there are billions of medical images scanned globally each year. Imaging data accounts for about 90% of all healthcare data1 and, until... Read more
Copyright © 2000-2025 Globetech Media. All rights reserved.