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Τετάρτη 24 Αυγούστου 2022

Protontherapy for adult craniopharyngioma: experience of a single institution i

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ABTSRACT
Background
Craniopharyngioma (CP) in adults is a rare benign tumor associated with many morbidities, with limited contemporary studies to define treatment, and follow-up guidelines.
Methods
A single-center retrospective study was conducted on patients aged ≥18-years from 2006–2018 with CP and who were treated with proton therapy (PT). Late toxicity was defined as a minimum of 18 months from diagnosis. Overall survival (OS), local recurrence-free survival (LRFS), and toxicity were characterized using Kaplan–Meier and Cox regression analyses.
Results
Ninety-one patients met the criteria, with a median age of 37-years (range 18–82y). PT was conducted after tumor resection in 88 patients (97%), in 64 patients (70.3%) as an adjuvant strategy and 27 (29.7%) after recurrent disease. Three patients received exclusive PT. A median MRI follow-up of 39 months revealed 35.2% complete response, 49.5% partial response, and 9 .9% stable disease. Five patients developed local recurrence (LR). Pattern of failure study showed that these five LR were within the GTV volume. The 5-year LRFS was 92.0% [CI95%:84.90-99.60]. All the patients were alive at the end of the follow-up. Patients requiring treatment adaptation during PT tend to have a higher risk of LR (p=0.084). Endocrinopathy was the most frequent grade≥2 late toxicity. Among patients who were symptom-free before the start of treatment, none developed hearing toxicity but four (9.8%) developed visual disorders and 10 (11.3%) symptomatic memory impairment. Patients with large tumors had a higher risk of developing symptomatic memory impairment (p=0.029).
Conclusion
Adults with CP treated with PT have favorable survival outcomes, with acceptable late toxicity. Prospective quality-of-life and neurocognitive studies are needed to define late adverse effects better.
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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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