Impact of radiation dose on local control and survival in extramedullary head and neck plasmacytoma

2Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.

This artice is free to access.

Abstract

Background: Patients with plasma-cell neoplasia usually suffer from systemic disease, although a minority (< 5%) may present with solitary involvement of bone or soft tissue (extramedullary plasmacytoma (EMP)). Radiotherapy (RT) is a state-of-the-art treatment for these tumors offering long term curation. Methods and materials: Between January 2005 and January 2017, twenty-seven patients underwent RT at our institution. The aim of this study was to analyse the effectiveness of various RT doses for different forms of EMP. Results: A total of 33 radiation courses were administered to 27 patients with a median age of 56 years. The median RT dose was 45 Gy (range: 12-55.8). The local control rate was 76% (93% for primary EMP vs. 61% for the secondary EMP lesions; P < 0.05). A complete response (CR) rate to local RT was achieved for 42% lesions (67% for primary EMP vs. 22% for the secondary EMP lesions; P < 0.01). The overall response rate (ORR) for the EMP lesions treated with high-dose regimens (> 45 Gy) versus low-dose regimens (≤ 45 Gy) was 87% versus 67%, respectively (P = 0.2). The median survival with high-dose RT group was significantly longer (P = 0.02). In subgroups analysis, primary EMP patients treated with high-dose RT had a non-significant higher ORR (100% vs. 80%, respectively; P = 0.3,) longer duration of LC (P = 0.3) with a longer survival (P = 0.05) than patients in low-dose group. No significant difference has been detected in secondary EMP patients treated with high-dose RT regarding ORR (60% vs. 62%, respectively; P = 1), and survival (P = 0.4). Conclusion: RT is an efficacious treatment modality in the treatment of EMP. A radiation dose ≤45 Gy confer a comparable CR rate to high-dose regimens and appears to be an effective treatment for controlling local EMP progression. Radiation dose-escalation may be beneficial for particular subgroups of patients.

Cite

CITATION STYLE

APA

Oertel, M., Elsayad, K., Kroeger, K. J., Haverkamp, U., Rudack, C., Lenz, G., & Eich, H. T. (2019). Impact of radiation dose on local control and survival in extramedullary head and neck plasmacytoma. Radiation Oncology, 14(1). https://doi.org/10.1186/s13014-019-1265-5

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free