Radiation Oncology
Expert insights on radiation treatment planning, techniques, toxicity management, and multimodal cancer care.
Recent Discussions
How would the updated results of ECOG 3311 influence your adjuvant RT recommendations for HPV+ OPSCC?
This question refers to this manuscript (Burtness et al., PMID 40493877), which is a 4.5-year follow-up of ECOG E3311.The results broadly mirror those seen in previous reports. The most notable novel finding reported is that among patients with low-risk features (who did not get any adjuvant RT), th...
Is keratosis follicularis (Darier disease) a contraindication to the receipt of PMRT?
Thanks for this interesting question. It prompted me to do a bit of literature search and think about how I'd approach this case.For a postmenopausal patient with ER-negative, PR-negative, HER2-negative (triple-negative) pT2N0(sn) breast cancer and unresectable positive surgical margins after mastec...
What are your institutions' preferences on SBRT vs. histotripsy for treatment of liver metastases?
I'll avoid the institutional political discussion of competing modalities. Like many ablative modalities, there is limited data directly comparing the safety and effectiveness of SBRT. As the new kid on the block, histotripsy has no comparative data that I'm aware of with existing modalities.HistoSo...
What is an acceptable maximum "bridging" dose between SRS/SRT targeted brain metastases in close proximity to one another?
Hi @Dr. First Last, hello from your neighbor in Flint, I hope this helps: I use "Brain Minus GTV" as my normal brain OAR, and to reduce the risk of radiation necrosis/edema, I try to keep it under: V12 at 5 cc or less for single fraction SRS; above that I will fractionate V28.8 at 7 cc or less when ...
Are there patient populations in whom you would consider using both induction chemotherapy and maintenance pembrolizumab for a patient with locally advanced cervical cancer?
Would consider for patients with multiple pelvic and high pa bulky nodes where risk of distant mets is extremely high, with the goal to treat with systemic intent, and if good response and no mets, proceed to definitive chemo-RT.
In patients with concomitantly diagnosed stage IV DLBCL and gastric MALT lymphoma who have residual gastric MALT after 6 cycles of Pola-R-CHP, would you alter the standard dose/fractionation for ISRT for the gastric MALT lymphoma?
Chemoimmunotherapy, while potentially curable for aggressive non-Hodgkin lymphomas such as DLBCL, is not generally considered a curative treatment for low-grade histologies, such as follicular and marginal zone lymphoma. After completing appropriate therapy for the more aggressive histology (DLBCL),...
What radiation fields would you recommend in a young patient with luminal B histology and ITCs in a single sentinel node?
I would not change the RT field, which could be APBI or whole breast, based on technical and biological factors (presuming this is upfront ITC).
How do you manage chronic radiation laryngeal edema for patients treated with RT for a larynx primary in the past?
I agree with @Dr. First Last's response above. I think it is important to differentiate between laryngeal edema resulting from RT and persisting as a sub-acute toxicity, as opposed to a patient who was treated in the past for larynx cancer and then develops laryngeal edema unexpectedly. In the forme...
When, if at all, would you consider sequential chemotherapy and radiation for locally advanced lung cancer instead of concurrent?
Surprisingly contentious. Concurrent provides slight advantage in those that can take it without interruptions. Sequential is better for marginal performance status, poor support systems, homeless. If locally symptomatic, XRT first, otherwise 2-3 cycles chemo.
How important is the timing of weekly cisplatin in concurrent chemoradiation for definitive treatment of cervical cancer?
Weekly cisplatin in concurrent chemoradiation for cervical cancer serves as a radiosensitizer. Theoretically, it makes most sense for the chemotherapy to overlap as much as possible with the radiation. This is why typically these regimens are started on a Monday, and ideally the dose of cisplatin sh...