Radiation Oncology
Expert insights on radiation treatment planning, techniques, toxicity management, and multimodal cancer care.
Recent Discussions
How do you dose or sequence therapy to overcome radioresistance from oligometastatic disease from RCC?
RAPPORT (NCT02855203) [Siva et al., PMID 34953600] was a phase I/II trial which used a combination of RT and pembrolizumab. RT was given with SBRT (20 Gy/1# prescribed to the 80% isodose line) or conventional radiotherapy (30 Gy/10#) when the treatment volume was in close proximity to a dose-limitin...
In patients with unresectable, liver-limited neuroendocrine tumors (NETs), what clinical or radiographic criteria guide your decision to prioritize systemic therapy over locoregional approaches?
The first question is always if it is truly unresectable... What is considered unresectable by some might be considered resectable by others, so I always recommend getting an opinion from an HPB surgeon with substantial experience in treating patients with NETs (whether that is done in person or at ...
In what circumstances would you recommend adjuvant radiation for a keratocanthoma with SCC after resection?
KA by itself (in the absence of SCC) is at the interface of benign and malignant. In a pure KA, if margins are negative, no further RT is needed. If there is SCC mixed, as can happen even with BCCs, the adjuvant RT indication rules pertaining to SCC prevail.
How do you counsel your breast-cancer survivors about weight-loss/dietary modifications?
Normal body mass index (BMI) and maintenance of weight is associated with a more favorable outcome (in many series both cancer-related and non-related) compared to higher BMI. Similarly higher level of exercise and metabolic equivalent (MET) is also associated with better outcome in many observation...
How do you manage neurocognitive decline associated with chemotherapy (i.e. chemo brain)?
I agree with @Dr. First Last's detailed response. Practically speaking, I would also add that it is important to listen and validate your patient's concerns and respond to their frustration and sense of loss. A diagnostic evaluation will not only help you and your patient discover or 'rule out' othe...
In a patient with borderline resectable pancreatic adenocarcinoma s/p 10 cycles FOLFOX and aborted Whipple due to locally advanced disease, do you recommend dose escalation beyond 54 Gy?
Yes, there is no contraindication to giving an ablative dose after exploration. 54 Gray is a palliative dose, which has not improved overall survival based on the LAP07 trial. While it's fair to say that we do not know the definition of definitive or ablative in LAPC, we have published OS results ve...
What resources/ancillary staff do you utilize for school re-entry after cancer treatment to decrease anxiety, improve self-confidence, and support emotional functioning?
Facilitating school re-entry for children and adolescents undergoing cancer treatment is an important component of comprehensive care. Maintaining engagement in school can help preserve a sense of normalcy and mitigate feelings of isolation and loneliness. However, the transition back to school may ...
Do you prescribe respiratory muscle training (RMT) devices to patients with dysphagia?
We encounter dysphagia frequently in our patients with Parkinson's disease and other movement disorders. If there are any concerns about swallowing or aspiration, my first step is to refer to Speech Therapy for evaluation, and I defer to their expertise for specific treatments from there. That said,...
Do you attempt to spare the submandibular glands in head and neck IMRT?
I do too. The primaries I consider electively treating 1B nodal station are: oral cavity, nose and anterior nasal cavity, lip, medial cheek/mid face, and node positive parotid. The submandibular gland itself is devoid of lymph nodes and is rarely ever involved by Sq cell Ca (versus the parotid gland...
Can a PSA bounce be seen shortly after SBRT to prostate cancer oligometastases while on androgen deprivation therapy?
I would not consider it a "bounce" if it happens shortly after treatment because the timing of a post-treatment bounce is later. If the PSA is higher than pre-treatment baseline soon after metastasis-directed SBRT, then you are likely observing one of two scenarios. First, the pre-treatment baseline...