Postoperative radiotherapy after upfront radical prostatectomy: debated issues at a turning point-a survey exploring management trends on behalf of AIRO (Italian Association of Radiotherapy and Clinical Oncology)

Hypofractionated Postoperative Radiotherapy in Prostate Cancer with Ialuril Soft Gels®: Toxicity and Efficacy Analysis on a Retrospective Series of 305 Patients

Aim

To evaluate the impact of Ialuril soft Gels^® (HA) in reducing acute genito-urinary (GU) toxicity in patients treated with adjuvant or salvage radiotherapy for a prostate cancer relapse.

Material and Methods

The data of 305 patients were retrospectively collected. One hundred and five patients underwent adjuvant radiotherapy (aRT), while 200 a salvage treatment (sRT). GU toxicity was evaluated according to CTCAE v5.0. Every patient received RT combined with HA.

Results

Grade 1-2 GU toxicity during RT was represented by: urgency (36%), dysuria (23%), increased urinary frequency (12.1%), and urinary retention (11.8%). Nevertheless, the majority of symptoms were present at the baseline. Grade 3 severe toxicity was represented by 10 (3.2%) cases of incontinence and 3 (1%) cases of urgency. The incidence of any-grade RT-related GU toxicity was significantly higher in the aRT group than the salvage group (esRT + sRT) (83.8% versus 64.5%). When comparing the incidence of any-grade RT-related GU toxicity in the aRT, esRT, and sRT groups we observed a significant correlation favoring sRT, over esRT, and aRT.

Conclusion

Postoperative hypofractionated radiotherapy is safe and not correlated with increase of unexpected toxicity when administered with oral hyaluronic acid. A prospective study is necessary to confirm these results.

Postoperative moderately hypofractionated radiotherapy in prostate cancer: a mono-institutional propensity-score-matching analysis between adjuvant and early-salvage radiotherapy

AIM

To evaluate the impact of moderately hypofractionated postoperative radiotherapy (RT) in prostate cancer (PCa).

MATERIALS AND METHODS

The data of 304 surgically resected PCa patients were analyzed. One hundred and five patients underwent adjuvant RT (aRT), 77 early-savage RT (esRT), and 123 salvage RT (sRT). Biochemical relapse-free survival (BRFS), progression-free survival (PFS) and toxicity were analyzed. A propensity score matching (PSM) was performed to account for potential confounders between aRT and esRT groups.

RESULTS

The median follow-up was 33 months. Three-year BRFS and PFS were 82 and 85.2%, respectively, in the overall population. At the multivariate analysis, Gleason score and hormone therapy were factors independently correlated with BRFS and PFS. After PSM, there was no difference in BRFS and PFS between aRT and esRT patients. Severe toxicity was represented by grade 3 urinary incontinence (3.5%) and urgency (1%), and aRT correlated with increased any-grade acute toxicity. Severe grade 3 gastrointestinal late toxicity occurred in 1.3% of cases.

CONCLUSION

Postoperative moderately hypofractionated RT achieved acceptable disease control rate and demonstrated no increased or unexpected toxicity. Future prospective studies should evaluate the role of postoperative RT in patients with unfavorable disease characteristics.

Attitudes, practices and perspectives on imaging strategies in prostate cancer: a national cross-sectional survey involving expert radiation oncologists on behalf of AIRO (Italian association of radiotherapy and clinical oncology) GU group

Although high sensitive imaging modalities such as MRI and PSMA PET/CT are becoming available for prostate cancer (PCa), the clinical benefit of an earlier detection of subclinical disease remains yet undetermined. Given these uncertainties, univocal recommendations are often lacking. The present survey was therefore developed by the Italian Association of Radiotherapy and Clinical Oncology (AIRO) to collect the opinion of expert radiation oncologists and delineate a representation of current clinical practice in our country. A nationwide cross-sectional survey was conducted in Italy by administering an anonymous questionnaire to experienced radiation oncologists, representative of the genitourinary (GU) tumor board at their Institution, using the cloud-based platform SurveyMonkey®. For each question, a consensus was achieved when ≥ 75% of the responders agreed on the same response. Thirty nine AIRO members from different Italian centers who were deemed experts in GU field accessed the proposed survey and completed all sections. Explored topics included staging of organ-confined disease, management of biochemical and local recurrence, imaging in the metastatic setting, imaging following metastasis-directed therapy (MDT), and future considerations. Response rate for single item of the questionnaire ranged between 51.2% and 100%. Expert GU AIRO members agree that advanced molecular and functional imaging are expanding their role in local and distant staging of PCa, as well as in the oncologic management and in the assessment of treatment response. However, many controversial issues still exist on the best timing for a diagnostic evaluation and the most appropriate imaging to aim at this purpose.