Radiation Oncology

Colorectal Cancer

Questions discussed in this category

Is 500 cGy x 5 an appropriate palliative regimen for a patient with a low-lying metastatic rectal cancer with ongoing pain and bleeding despite chemotherapy?

3 Answers available

What are your top takeaways in GI Cancers from ASCO 2022?

What were your “top 3” presentations/studies coming out of the meeting this year and how will it impact your own clinical practice?

5 Answers available

Following transanal excision with positive margins for for T1 or T2 rectal cancer, is it more appropriate to proceed with APR or attempt sphincter preservation with RT/Chemo?

If RT/chemo is preferred, what is an acceptable final boost dose?

1 Answer available

In what situations can short course RT (5Gy x 5fx) be used instead of chemoRT for rectal cancer?

6 Answers available

For locally advanced rectal cancer, would you consider utilizing the RAPIDO trial approach of short course radiation followed by neoadjuvant chemotherapy prior to surgery?

Colleagues in surgery have raised concerns about post radiation effects in the pelvis with the ordering of short course RT->chemo ->surgery.

5 Answers available

Which patients with rectal cancer who have not received neoadjuvant treatment do you offer adjuvant radiation to?

Is there a subset of patients you would avoid neoadjuvant CRT and operate first?

3 Answers available

In what setting do you omit adjuvant radiation therapy in a T3N0 rectal cancer?

The NCCN guidelines categorically recommend adjuvant XRT for a cT1-2N0 rectal adenocarcinoma upstaged to a pT3N0, yet there are multipl...

1 Answer available

In rectal cancer in patients receiving total neoadjuvant therapy of FOLFOX followed by 5FU-radiation, is there a role for additional adjuvant chemotherapy based on significant residual disease at time of surgery?

1 Answer available

Do you treat rectosigmoid/upper rectal cancers with neoadjuvant chemoradiation?

The German trial included patients with tumors up to 16cm from the anal verge, while the Swedish trial update found no local control benefit for tumor...

5 Answers available

Is there evidence to support routine use of adjuvant chemotherapy for resected rectal cancer treated with pre-operative chemoradiation?

The NCCN seems to make its recommendation based on extrapolation from colon cancer, but those patients are not treated with pre-op chemoRT.

3 Answers available

When do you consider total neoadjuvant therapy (chemotherapy and chemoradiation) for rectal cancer?

1 Answer available

For rectal cancer with solitary liver metastasis, do you recommend neoadjuvant chemoradiation?

Are these patients better candidates for preop chemotherapy alone?

2 Answers available

Do you treat inguinal lymph nodes for rectal cancers involving the anal canal?

The RTOG contouring atlas doesn't give a consensus on this issue.

4 Answers available

Would you treat the inguinal nodes in a patient who had an adenocarcinoma excised from the anal canal?

In a lesion <2.5 cm from anal verge arising in a tubulovillous adenoma, does the data from Taylor, et. al. Red Journal 2001 apply?

2 Answers available

For elderly patients with locally advanced rectal cancer who are not candidates for surgery or chemotherapy, what would be an appropriate palliative regimen?

1 Answer available

What dose and upper field border would you use following transanal excision for rectal cancer found to be T2 by final pathology but without LVSI or perineural invasion?

Should standard post operative radiation fields be used, treating up to the L5-S1 interspace? Or is it acceptable to treat a lower field, for ins...

1 Answer available

What is the appropriate treatment for a low lying rectal cancer in the setting of prior definitive prostate IMRT?

Fore example for a T3N0 rectal cancer on EUS?

1 Answer available

When treating rectal cancer with neoadjuvant chemoRT, is it appropriate to employ IMRT planning, rather than 3D conformal, for all cases, or should IMRT be reserved for special circumstances?

1 Answer available

Is it possible to palliate presacral recurrences of rectal cancer in patients who previously received neoadjuvant chemoradiation to the rectum?

In the past, I haven't seen great results in palliating the presacral area. The pain is excruciating for many patients. Is there an effective option f...

1 Answer available

For a patient who has undergone preoperative chemoradiation to 50Gy for locally advanced rectal cancer followed by LAR or APR, would you treat a positive margin with radiation therapy?

If so, what dose?

2 Answers available

Has pelvic MRI replaced EUS as the standard of care for rectal cancer staging?

Are there any indications to choose one over the other?

1 Answer available