DETECT: Target Volume for Rectal Endoluminal Radiation Boosting
Recruiting
Observational Study
Rectal Cancer
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
No Study Drug
Researchers observe your health over time — no experimental treatment is given.
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At a Glance
Age
18 and older
Sex
Any
Study type
Observational
Participants needed
50 (estimated)
Sponsor
Maastricht Radiation Oncology · Other
Who this trial is looking for
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The aim of the study is to provide prospective data regarding microscopic tumor spread in all directions from the macroscopic tumor in pathology specimens, as seen by eye, and on imaging to define the target volume for endoluminal radiation boosting in rectal cancer patients.
Trial Locations
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Status
Eligibility Criteria
Inclusion Criteria:
* ≥18 years of age and capable of giving informed consent.
* ycT1-3N0(\*) residual(\*\*) histology confirmed rectal adenocarcinoma after neoadjuvant radiotherapy or long-course chemoradiotherapy for which patients will undergo TME surgery.
* Minimal interval between end of neoad…
Inclusion Criteria:
* ≥18 years of age and capable of giving informed consent.
* ycT1-3N0(\*) residual(\*\*) histology confirmed rectal adenocarcinoma after neoadjuvant radiotherapy or long-course chemoradiotherapy for which patients will undergo TME surgery.
* Minimal interval between end of neoadjuvant chemoradiotherapy or radiotherapy: 6 weeks.
(\*)= as determined by clinical assessment (digital rectal examination, endoscopy with or without biopsy) and/or MRI. Biopsy/histology around the time of diagnosis is adequate; no biopsy/histology is needed after neoadjuvant therapy.
(\*\*)= including tumor regrowths/local recurrence after an initial clinical complete response and a "watch and wait" approach. These patients will also be included after the local recurrence has been determined using endoscopy and/or MRI.
Exclusion Criteria:
* Patient has received brachytherapy as part of neoadjuvant treatment.
* \<18 years of age or incapable of giving informed consent.
* Patient has not been treated with neoadjuvant radiotherapy or long-course chemoradiotherapy.
* Patient will not undergo TME surgery for a ycT1-3N0 residual histology confirmed rectal adenocarcinoma.
* Interval between end of neoadjuvant therapy and surgery is \<6 weeks.
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