Radiation Oncology
Expert insights on radiation treatment planning, techniques, toxicity management, and multimodal cancer care.
Recent Discussions
What is the optimal interval between vaginal cuff brachytherapy sessions?
At MD Anderson, we give 6 Gy x 5 to the surface and we most often treat every other day. However, given the low risk of toxicity, we think it's safe to make adjustments to this schedule. For example, we often do some treatments on sequential days if that's preferred for any reason. We also schedule ...
Is it acceptable to treat newly diagnosed small cell lung cancer with limited brain metastasis with upfront SRS?
First, to be clear, there's not good evidence regarding the role of radiosurgery in small cell patients who have not had WBRT or PCI. In patients without brain metastases, there's a clearly defined and clinically significant survival benefit, which seems to result from both control of existing metas...
How do you manage a prostate cancer patient with pelvic lymphadenopathy and a single enlarged PSMA PET+ gastrohepatic node?
I would treat it as oligometastatic, starting with ADT/ARPI and use metastasis-directed therapy and pelvic radiation.
How do your PMRT recommendations change with ITCs after neoadjuvant chemotherapy if they had SLNB only versus ALND in light of B51?
Data such as from Dana-Farber/Brigham and Women’s Cancer Center and the National Cancer Database (Wong et al., PMID 31228134), as well as the OPBC-05/ICARO study (Montagna et al., PMID 39509672), indicate that patients with isolated tumor cells in axillary nodes after neoadjuvant chemotherapy (ypN0i...
Are you offering hypofractionated comprehensive nodal irradiation following neoadjuvant chemotherapy for patients with locally advanced breast cancer in the setting of COVID-19?
In locally advanced breast cancer following neoadjuvant chemotherapy, we are offering hypofractionated radiation to the breast and regional nodes, and flat chest wall and regional nodes. In these cases, I treat to 40 Gy/15 fractions. For nodal coverage, I like to see 38 Gy line covering nodal basins...
Do you consider increased tumor thickness alone as an indication for postoperative radiation in oral cavity cancers?
Depth of invasion (DOI )has been shown to predict regional disease. As such, surgeons will use this information to decide if a neck dissection (ND) should be performed in the cN0 patient with oral tongue cancer.With no other adverse features (i.e., no PNI, no LVSI, no poor differentiation, good marg...
In ES-SCLC presenting with extensive brain metastases, how do you time whole brain radiation after the first cycle of chemotherapy has already been delivered?
We typically try to wait as long as possible before we start WBRT. It depends on the burden and symptomatology of intracranial disease as well as the initial response to chemo-immunotherapy. If the brain metastases are asymptomatic and deemed OK to monitor closely (i.e., not likely to cause neurolog...
If adjuvant radiation is offered to an elderly patient with H&N SCC s/p Mohs surgery who is planned for multi-stage reconstruction of the defect with plastic surgery, when should adjuvant radiation be started?
Tumor control comes first. If the surgical defect is such that reconstruction is required, it is even more imperative to focus on the above principle, as a recurrence would almost certainly risk ruining the entire collective effort. Vascular flaps could be safely performed post-RT in most cases by s...
When would you offer neoadjuvant immunotherapy prior to Mohs surgery in a locally advanced squamous cell carcinoma for which clearance may require enucleation?
I would flip this question around and answer that radiotherapy is often a terrific option around the eyes, and it should always be considered in this area, especially when a radical surgical procedure is being entertained. Between en face therapy with a shield (superficial, electrons) and IMRT/VMAT,...
Would you treat a patient with an N2 ipsilateral recurrence following re-resection of bronchial stump recurrence?
My answer is predicated on the assumption that this patient has not had prior radiation therapy. If that is the case, then I would treat them. It is important to talk to the thoracic surgeon and know how the bronchial stump was "finished". My preference is that it is done with a fresh intercostal mu...