Anyone doing concurrent full dose systemic chemotherapy and WBRT as a standard of practice?
Anyone doing concurrent full dose systemic chemotherapy and WBRT as a standard of practice?
I didn't vote for that, however:I am intrigued by the person who voted WBRT -> Chemo. In the case of patients needing systemic treatment, what is the rationale for delaying that for 7 weeks while doing WBRT?
Surely you may encounter patients who need both right away (systemic chemotherapy + WBRT). But there patients are probably the patients which have the worst prognosis of all with conditions like superior vena cavy syndrome in chemo-sensitive disease or liver/lungs full of mets AND symptomatic brain mets.
And GFunk, your question is duly noted and valid. I'm assuming WBRT for garden variety brain mets . . .
I think Palex is dead on with his commentary. WS, I don't think any responsibly acting rad onc would delay systemic therapy more than 2-3 weeks for WBRT in the setting of metastatic cancer. That said, I would endorse such a delay because more often than not, it is the patient's intracranial rather than extracranial disease that will be the first source of symptomatic decline, hence the (usually) urgent referral.
I've had my referring med oncs ask about giving concurrent chemo, and my typical response is that I am reluctant to do so, since there is the potential for additive toxicity, and, to my knowledge, no prospective data showing benefit in terms of LC or neurologic PFS outside of some small trials with TMZ in melanoma mets and a North American subset analysis of the Motexafin gadolinium trial.
I will consider concomitant chemo and whole brain on a case-by-case basis, however. My most common reason for such a treatment is in NSCLC that is metastatic to the brain at initial presentation. These patients will occasionally have worrisome intrathoracic findings like vessel encasement, SVC syndrome or impending airway compromise that will warrant palliative thoracic RT in addition to WBRT. In these cases, while I have the same concerns about additive toxicity, the chemo is typically dose reduced to act purely as a radiosensitizer.
And GFunk, your question is duly noted and valid. I'm assuming WBRT for garden variety brain mets, since most primary CNS tumors are no longer treated w/ WBRT, and the concept of WBRT plus chemo in general has relatively few contemporary applications (PCNSL, and maybe Medullo if you tack on the additional spinal fields).
=
WBRT + Full dose systemic chemotherapy
OR
Tender Loving Care[/QUOTE]
Bloody Hell. I'll take B, please.
Or prescribe a few cycles of hyper-CVAD (Cocaine, Vegas, Adult Dancers)
Or prescribe a few cycles of hyper-CVAD (Cocaine, Vegas, Adult Dancers)
On my job interview trail last year, I have seen concurrent chemo-WBRT with WBRT lasting longer than 3 weeks. I didn't join the group.
let me clarify WBRT = whole brain RT for known brain mets (not PCI). sorry bout that.
It's a great option actually, one that we practice here often too.On a side note, I've seen our attendings and the med oncs delay WBRT in patients with SCLC and a few tiny brain mets if they have extensive-stage disease and want to get systemic therapy going. They'll re-assess them after a cycle or two (assuming no neurologic sx at any point), and often, the mets will respond and/or disappear.