ESTRO 2024 - Abstract Book

S2610

Clinical - Urology

ESTRO 2024

3. De Blesser E, et al. Metastasis-directed therapy in treating nodal oligorecurrent prostate cancer: a multi institutional analysis comparing the outcome and toxicity of stereotactic body radiotherapy and elective nodal radiotherapy. Eur Urol 2019; 76 (6):732-739

4. Suppiot S, et al. OLIGOPELVIS GETUG P07, a multicenter phase II trial of combined high-dose salvage radiotherapy and hormone therapy in oligorecurrent pelvic node relapses in prostate cancer. Eur Urol 2021; 80 (4): 405-414

5. Fodor A, et al. Extended nodal radiotherapy for prostate cancer relapse guided with [11C]-choline PET/CT: ten year results in patients enrolled in a prospective trial. Eur J Nucl Med Mol Imaging 2023. doi:10.1007/s00259-023 06445-4

3044

Digital Poster

Patient Adherence with Prostate Radiotherapy Planning Protocols – Can we do Better?

Kirsty Nash, Adam Peters, Abdulla Alhasso, Helena Belikova, David Dodds, Ashleigh Kerr, Carolynn Lamb, Brendan McCann, Stephen McKay, Azmat Sadozye, Norma Sidek, Jan Wallace, Nicholas MacLeod

The Beatson West of Scotland Cancer Centre, Radiotherapy, Glasgow, United Kingdom

Purpose/Objective:

Maintaining organ consistency is integral in addressing randomised error during radiotherapy to the prostate¹. Changes in bladder and rectum volume during treatment have an impact on delivered doses to these organs at risk². Unreproducible rectal volumes can move the PTV affecting coverage and in some cases, push the rectal wall into the high dose region causing greater gastrointestinal toxicity. Insufficient bladder volume can lead to greater urinary toxicity experienced by the patient. Pre-treatment preparations are in place to attempt to stabilise and reproduce organ at risk positions. Many departments within the UK have differing protocols for bladder filling or emptying, and bowel preparation of laxatives or enemas however compliance of these practices varies³. The current departmental protocol requires patients use micro-enemas followed by drinking 500mls water 30 minutes before scanning achieving a bladder volume >100mls and rectum <4cm. These instructions are delivered to patients verbally at clinic and written in booklets. Ineffective preparation can result in multiple hospital attendances and treatment delays which is detrimental to the department and patient mental wellbeing.

This service development aimed to assess the departmental impact on rescan rates of providing additional education to patients on preparation protocols via telephone prior to planning scans for prostate radiotherapy.

Material/Methods:

In 2022, all patients referred for radiotherapy to the prostate were identified prior to attending for a planning CT simulation scan. All patients were telephoned on an ad hoc basis to reiterate preparation protocols from ten days