Radiation Oncology
Expert insights on radiation treatment planning, techniques, toxicity management, and multimodal cancer care.
Recent Discussions
Has the PACE-A sexual function data changed how you present treatment options to a patient with localized prostate cancer who prioritizes preservation of sexual function?
There is limited available data comparing patient-reported outcomes (PROs) between stereotactic body radiotherapy (SBRT) and prostatectomy in localized prostate cancer. The PACE-A Trial is a randomized controlled trial comparing SBRT to radical surgery for low- to intermediate-risk prostate cancer. ...
How are you approaching patients with early-stage NSCLC who progress on neoadjuvant chemo-immunotherapy and are no longer surgical candidates?
This is a good question, and we are seeing it too often these days. This question cites progression as the reason for not proceeding to surgery after neoadjuvant chemo-IO. We are also seeing patient refusal and ineligibility (i.e. N3 disease that didn't respond) as reasons. I think it's very importa...
Do you recommend IM biopsy in the initial staging of breast cancer patients with suspicious IM nodes on imaging?
I think it is always preferable to biopsy suspected cancer sites when developing a therapeutic plan. Biopsy provides a greater degree of certainty in clinical decision making and can be informative when evaluating outcomes of care retrospectively for quality improvement or research projects. However...
How do you sequence radiation and capecitabine in breast cancer patients receiving adjuvant capecitabine for residual disease after neoadjuvant chemotherapy?
According to personal communication with Dr. Masakazu Toi (June 13, 2017), the corresponding author of the CREATE-X NEJM publication, radiotherapy was administered prior to capecitabine in the majority of cases on this study. It is worth noting that in CALGB 49907, a randomized trial comparing capec...
Would you offer hippocampal sparing whole brain radiation for patients with brain metastases due to ES-SCLC?
Until we have built-in auto-segmentation, I find the RTOG contouring atlas very helpful for manual contouring of the hippocampus. I tend to use the lateral ventricle as my main landmark, and look for the circle of gray matter located medial to it. Once I've drawn a hippocampus, I'll look at it in th...
Are there select patients with rectal cancer where radiation field size reduction might be feasible?
Yes, however, how to select which patients could have a field size reduction is unknown. Such a field size reduction is probably even more acceptable in the era of total neoadjuvant therapy, however, this cannot be considered standard of care given the absence of trials evaluating such novel approac...
Do you add ADT to RT for a patient with intermediate-risk prostate cancer with discordant Decipher and ArteraAI results?
This will be a long response to try to provide transparency to these tests from what I know as a researcher and clinician. I also clinically see this situation frequently. We have made incredible progress in developing biomarkers in prostate cancer, but it is important to know that no single test is...
How do you approach treatment of a glioblastoma in pregnancy?
Glioblastoma during pregnancy could be treated safely (to mother and fetus) with certain precautions and modifications. Collaboration and consultation with the patient’s obstetrician are essential. External shielding over the patient’s abdomen during treatment will decrease the external scatter radi...
How do you manage bothersome diplopia due to metastatic disease affecting occipital lobe?
An isolated occipital lobe lesion should not result in strabismic diplopia (relating to misalignment of the eyes) unless a resulting loss of peripheral field reduces the drive for fusion and decompensates an underlying strabismus. The fact that it does not go away with monocular occlusion suggests i...
Do you use either memantine or hippocampal sparing technique to preserve cognitive function when giving whole brain radiotherapy?
Dr. @Dr. First Last and I put together the response below:We use memantine and hippocampal sparing technique for all brain metastasis patients who are planning to receive WBRT. This is based off the recently published phase III trial NRG CC001 that found hippocampal avoidance WBRT plus memantine res...