Radiation Oncology, Fondazione IRCCS Policlinico S. Matteo, Pavia, Italy.
Radiotherapy Unit, Department of Oncology, AOU Careggi, Florence, Italy.
Clin Neurol Neurosurg. 2020 Mar;190:105646. doi: 10.1016/j.clineuro.2019.105646. Epub 2019 Dec 21.
Papillary tumor of the pineal region (PTPR) is a rare neuroepithelial brain tumor, characterized by a high risk of local recurrence (greater than 70 % at 6 years). The aim of our study was to review the available literature on radiotherapy for PTPR in order to evaluate timings, schedules, outcomes and toxicities of this treatment modality. In our review, 72.4 % (84) of the patients diagnosed with PTPR received radiation therapy. There is heterogeneity in the dose prescription, ranging from 45 Gy (25 × 1.8 Gy) to 60 Gy (30 × 2 Gy) for 3D Conformal Radiation Therapy and from 12 Gy to 36 Gy for Stereotactic Radiosurgery. Being considered as a grade II or III tumor, PTPR should receive higher total radiation dose in the adjuvant setting. Our analysis showed a very limited treatment-related toxicity with an expected 10-y OS of 72.5 %. At 5-years from the diagnosis, about 60 % of the patients experienced a local recurrence, whereas at 10 years the rate is higher than 80 %. In the literature, conflicting data about radiotherapy for PTPR are reported, in particular regarding disease progression. Although radiotherapy represents a fundamental treatment in the management of PTPR, prospective studies are required to better define its impact on overall survival and progression-free survival.
松果体区乳头状肿瘤(PTPR)是一种罕见的神经上皮脑肿瘤,其局部复发风险较高(6 年内大于 70%)。我们的研究旨在回顾关于 PTPR 放疗的现有文献,以评估这种治疗方式的时机、方案、结果和毒性。在我们的综述中,72.4%(84 例)的 PTPR 患者接受了放射治疗。在剂量方案方面存在异质性,从 3D 适形放疗的 45Gy(25×1.8Gy)到 60Gy(30×2Gy),立体定向放疗的 12Gy 到 36Gy 不等。由于被认为是 II 级或 III 级肿瘤,PTPR 在辅助治疗中应接受更高的总辐射剂量。我们的分析显示,治疗相关毒性非常有限,预期 10 年总生存率为 72.5%。在诊断后 5 年,约 60%的患者出现局部复发,而 10 年后的复发率高于 80%。在文献中,关于 PTPR 放疗的报告存在相互矛盾的数据,特别是在疾病进展方面。尽管放疗是 PTPR 治疗管理中的一项重要治疗手段,但仍需要前瞻性研究来更好地确定其对总生存和无进展生存的影响。
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