Abstract
Aims: To report feasibility and efficacy of high-tech Radiotherapy (RT) for the treatment of synchronous Multiple Primary Malignancies (sMPM) for elderly patients with primary Prostate Cancer (PC). Methods: Two elderly patients with PC and synchronous Anal Cancer (AC) and sacrum chordoma, respectively, were described. The first one was treated with radical radio-chemotherapy. A total dose of 70 Gy / 65.5 Gy (28 fractions) was prescribed to prostate/ seminal vesicles, and concomitantly, 56 Gy / 50.4 Gy / 45 Gy were prescribed to tumor, anal canal/mesorectum/pelvic nodes, and inguinal nodes, respectively. For the second case, after resection of chordoma, adjuvant and prostate radical RT (65.5 Gy / 70 Gy) in 28 fractions were used. In both cases, Volumetric-Arc RT was performed. Results: Patients completed the planned treatment without severe toxicities. After a median follow-up of 12 months, no sign of PC and a controlled/reduction of chordoma/AC were observed. Conclusion: High-tech RT is safe and effective for sMPM elderly patients. Keywords: Synchronous cancers; Elderly; Treatment; Radiotherapy; Multidisciplinary evaluation.
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