Radiation Oncology
Expert insights on radiation treatment planning, techniques, toxicity management, and multimodal cancer care.
Recent Discussions
Does delay to the time of lumpectomy impact your decision to omit radiation?
There seem to be two issues to consider in this situation. One is whether patients undergoing neoadjuvant endocrine therapy, then lumpectomy without RT, have an acceptable local recurrence rate. The only study I know of directly addressing this issue was presented at a poster session of the 2017 San...
How do you approach breast hypofractionation RNI with the results of the Skagen Trial 1?
There are multiple prospective/randomized studies showing non-inferiority for complications or cancer outcome with hypofractionation and RNI, including Wang et al., PMID 30711522, HypoG-01, FABREC, RT-CHARM, and the subset arm of STARTb. The primary endpoint of DKSG was also lymphedema, which was no...
Are there situations in which you would definitely recommend radiation in an elderly patient with ER+, early stage breast cancer?
I always have a little trepidation in answering questions whereby I would “definitely†recommend any therapeutic path as clinical decision making needs to be a bit more nuanced. Every situation requires a careful weighing of multiple inputs including clinical trial data and patient-specific fact...
What are your top takeaways in Neuro Oncology from ASCO 2025?
Aizer et al., JCO 2025 - A multi-instituitional Brigham Dana-Farber-led trial randomized 196 patients with 5-20 brain metastases to stereotactic radiosurgery (SRS) or hippocampal avoidance whole brain radiotherapy (HA-WBRT). Patients treated on the SRS arm had significantly less symptom burden, wit...
If an asymptomatic patient requires a delay up to a week before starting chemotherapy for Stage III lung cancer, do you also push back the radiation start date?
Typically, the reason for B12 and folate prior to chemotherapy is related to the drug that will be used, pemetrexed. Giving the premedication reduces hematologic and gastrointestinal toxicity to tolerable levels. One week typically will not make a difference and I would usually wait to start. Howeve...
How do you counsel families of pediatric patients regarding risk of secondary malignancy or IQ changes with cranial radiation using photons?
It’s a great question as these are two of the scariest things that families face when you relay the potential risks of cranial radiotherapy. Simple things like timing of these topics in the consent discussion can make a difference. Don’t start with the scariest potential risk when doing the consent,...
What is your approach to post-operative radiation (when to offer, volume, dose, fractionation) for a primary intraosseous squamous cell carcinoma (PIOCC) of the head & neck?
I probably would. 60 Gy in 30 fractions for negative margins and electively treat the neck.
What dose of radiation do you use for neoadjuvant chemoradiation in esophageal cancer?
The CROSS trial does not exist in a vacuum. We have a long history of esophageal trials by the RTOG and other cooperative groups that consistently used chemoradiation to 5040 cGy, and this remains the standard of care in the U.S. That said, if I have to treat a very long tumor, resulting in lung met...
Should axillary imaging be routinely performed in all patients with a new diagnosis of breast cancer?
This issue has been debated but I would argue that patients with a new diagnosis of breast cancer should not undergo routine screening US of the axilla to look for clinically occult disease. The axillary US should be limited to diagnostic imaging for clinically suspicious nodes on clinical exam or b...
How do you manage symptomatic radiation necrosis not responsive to steroids?
I agree with the above recommendations. We review these cases at our brain tumor board. We often start off with confirming the diagnosis using MRI with perfusion. If perfusion is equivocal (hard to interpret or lesion is too small) and the patient is asymptomatic, we follow. If the patient is sympto...