Quality control of involved-field radiotherapy in patients with advanced Hodgkin's lymphoma (EORTC 20884).
| Autor: | Aleman BM; Department of Radiotherapy, The Netherlands Cancer Institute, Amsterdam, The Netherlands. b.aleman@nki.nl, Girinsky T, van der Maazen RW, Strijk S, Meijnders P, Bortolus R, Olofsen-van Acht MJ, Lybeert ML, Lievens Y, Eghbali H, Noordijk EM, Tomsic R, Meerwaldt JH, Poortmans PM, Smit WG, Pinna A, Henry-Amar M, Raemaekers JM |
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| Jazyk: | angličtina |
| Zdroj: | International journal of radiation oncology, biology, physics [Int J Radiat Oncol Biol Phys] 2005 Nov 15; Vol. 63 (4), pp. 1184-90. Date of Electronic Publication: 2005 Jun 02. |
| DOI: | 10.1016/j.ijrobp.2005.03.044 |
| Abstrakt: | Purpose: To evaluate the impact of the quality of involved-field radiotherapy (IFRT) on clinical outcome in patients with advanced Hodgkin's lymphoma (HL) in complete remission (CR) after six to eight cycles of mechlorethamine, vincristine, procarbazine, prednisone-doxorubicin, bleomycin, and vinblastine (MOPP-ABV) chemotherapy. Methods and Materials: A retrospective review of clinical and radiologic data, radiation charts, simulator films, and megavoltage (MV) photographs was performed. IFRT consisted of 24 Gy to all initially involved nodal areas and 16-24 Gy to all initially involved extranodal sites. Major violations were defined as no or only partial irradiation of an originally involved area, or a total dose <90% of the prescribed dose. Results: Of the 739 patients who were enrolled in the trial between 1989 and 2000, 57% achieved a CR; 152 of 172 patients randomized to IFRT actually received radiotherapy; and in 135 patients, quality control was performed. The overall major violation rate was 47%, predominantly concerning target volumes. The total dose was correct in 81% of the patients. After a median follow-up of 6.5 years, there was no difference in cumulative failure rate between patients with or without major violations. There was no relationship between incidence or site of relapse and major protocol violations. Conclusion: In advanced-stage HL patients in complete remission after six to eight cycles of MOPP-ABV, the outcome was not influenced by violation of the radiotherapy protocol. |
| Databáze: | MEDLINE |
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