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Hasterok M, Szołtysik M, Nowicka Z, Goc B, Gräupner D, Majewski W, Rasławski K, Rajwa P, Jabłońska I, Magrowski Ł, Przydacz M, Krajewski W, Masri O, Miszczyk M. Rectum and Bladder Toxicity in Postoperative Prostate Bed Irradiation: Dose-Volume Parameters Analysis. Cancers (Basel) 2023; 15:5334. [PMID: 38001594 PMCID: PMC10670737 DOI: 10.3390/cancers15225334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 11/01/2023] [Indexed: 11/26/2023] Open
Abstract
Although prostate cancer treatment is increasingly effective, its toxicities pose a major concern. The aim of our study was to assess the rate of adverse events (AEs) and the prognostic value of dose-volume histogram (DVH) parameters for the occurrence of treatment toxicity in patients treated with post-prostatectomy prostate bed radiotherapy (RT). The AEs were scored according to the CTCAE v.5.0. The rectum and bladder were contoured according to the RTOG Guidelines. The DVH parameters were assessed using data exported from the ECLIPSE treatment-planning system. Genitourinary (GU) and gastrointestinal (GI) toxicity were analysed using consecutive dose thresholds for the percentage of an organ at risk (OAR) receiving a given dose and the QUANTEC dose constraints. A total of 213 patients were included in the final analysis. Acute grade 2 or higher (≥G2) GU AEs occurred in 18.7% and late in 21.3% of patients. Acute ≥G2 GI toxicity occurred in 11.7% and late ≥G2 in 11.2% of the patients. Five patients experienced grade 4 AEs. The most common adverse effects were diarrhoea, proctitis, cystitis, and dysuria. The most significant predictors of acute ≥G2 GI toxicity were rectum V47 and V46 (p < 0.001 and p < 0.001) and rectum wall V46 (p = 0.001), whereas the most significant predictors of late ≥G2 GI AEs were rectum wall V47 and V48 (p = 0.019 and p = 0.021). None of the bladder or bladder wall parameters was significantly associated with the risk of acute toxicity. The minimum doses to bladder wall (p = 0.004) and bladder (p = 0.005) were the most significant predictors of late ≥G2 GU toxicity. Postoperative radiotherapy is associated with a clinically relevant risk of AEs, which is associated with DVH parameters, and remains even in patients who fulfil commonly accepted dose constraints. Considering the lack of survival benefit of postoperative adjuvant RT, our results support delaying treatment through an early salvage approach to avoid or defer toxicity.
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Affiliation(s)
- Maja Hasterok
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
| | - Monika Szołtysik
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
| | - Zuzanna Nowicka
- Department of Biostatistics and Translational Medicine, Medical University of Lodz, Mazowiecka 15, 92-215 Lodz, Poland;
| | - Bartłomiej Goc
- Radiotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (B.G.); (W.M.); (K.R.)
| | - Donata Gräupner
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
| | - Wojciech Majewski
- Radiotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (B.G.); (W.M.); (K.R.)
| | - Konrad Rasławski
- Radiotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (B.G.); (W.M.); (K.R.)
| | - Paweł Rajwa
- Department of Urology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria;
- Department of Urology, Medical University of Silesia, 3-go Maja 13-15, 41-800 Zabrze, Poland
| | - Iwona Jabłońska
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
| | - Łukasz Magrowski
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
| | - Mikołaj Przydacz
- Department of Urology, Jagiellonian University Medical College, Macieja Jakubowskiego 2, 30-688 Krakow, Poland;
| | - Wojciech Krajewski
- Department of Minimally Invasive and Robotic Urology, Wrocław Medical University, 50-556 Wrocław, Poland;
| | - Oliwia Masri
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
| | - Marcin Miszczyk
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; (M.H.); (M.S.); (D.G.); (I.J.); (Ł.M.); (O.M.)
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