Radiation Oncology
Expert insights on radiation treatment planning, techniques, toxicity management, and multimodal cancer care.
Recent Discussions
How would you treat a limited stage small cell carcinoma of the larynx?
70 Gy/35 fractions or equivalent with altered fractionation and small cell chemo with Elective nodal RT. I’ve only treated a few and have not cured one due to distant mets.
How do you manage stage III resectable NSCLC patients treated with neoadjuvant chemoimmunotherapy per CheckMate 816 with residual disease who subsequently refuse surgery?
(1) Carefully analyze what happened with the patient, their medical oncologist, and thoracic surgeon, (2) restage the patient with an FDG-PET/CT and brain MRI to rule out distant metastatic progression, (3) confirm with their medical oncologist that CRT-> Durva is still an option, (4) confirm that a...
How would you approach radiation for an elderly patient with pT2N1 TNBC s/p MRM and ALND who refused chemo-immunotherapy?
RT will offer improved local control in this patient, as she has an elevated risk of LRR (positive LN, triple negative, large-ish T2, grade 3, LVSI). It will be unlikely to change her survival, as the data for PMRT did not show survival benefit until the chemotherapy was good enough to decrease dis...
What dose constraints do you use when treating ultra-central lung tumors with a hypofractionated/ultra-hypofractionated approach using 8-10 fractions?
Typically, ultra-central lung tumors mean that they abut/invade critical central structures such as the bronchial tree, tracheal, esophagus, major vessels, etc. For these critical structures, particularly for the esophagus, bronchial tree and tracheal, ablative dose could cause severe chronic toxici...
Would you forgo lumpectomy cavity boost for grade 1 papillary carcinoma with associated grade 1 DCIS that has been resected with good margins?
Yes, I would treat it with the same principle as luminal A breast cancer.
What is your approach in deciding to include the entire tongue or a smaller volume (tumor surgical bed + margin) for adjuvant radiation in oral tongue cancer?
I would treat the large majority of the tongue, unless I had a very good method to immobilize the tongue (which I do not have; a bite block is not enough).
Is it safe to continue capmatinib during palliative radiation to a bone lesion in patients with metastatic lung cancer?
This a great question, and to my knowledge, there is no good literature (prospective or retrospective) to guide the treatment decision. That said, we have anecdotal experience continuing capmatinib during palliative radiation to osseous metastases, and that is the approach I favor.
How would you treat a gliosarcoma s/p GTR with leptomeningeal spread?
This is an extremely challenging clinical situation. The overall annual incidence of gliosarcoma in the US is <250 cases. These tumors, which usually contain both an astroglial and a sarcomatous cell population have a propensity to spread throughout the CNS, using CSF flow pathways, and hence leptom...
What is a reasonable dose to treat the entire bladder for an muscle invasive, multi-focal bladder cancer in a non-surgical patient?
A variety of dosing schemes have been used in bladder-sparing trimodality (TMT) experiences from the US (RTOG/NRG trials) and the UK (BC2001 and BCON trials). In BC2001, one of the randomizations in the 2 x 2 design was to treatment of the entire bladder to the prescription dose (64 Gy in 32 fractio...
Do you prefer IMRT to 3D for partial breast treatment?
Prefer IMRT for better conformity, dose homogeneity, and less dose to uninvolved breast. Lung dose is not a clinically meaningful difference.