Radiation therapy salvage of Hodgkin's disease following chemotherapy failure.

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Abstract
Between 1972 and 1984, 17 patients with advanced Hodgkin's disease failing intensive combination chemotherapy in previously unirradiated nodal and/or pulmonary sites were treated with salvage radiotherapy. Treatment consisted of comprehensive wide field radiotherapy to all known areas of disease. Doses administered to these fields ranged from 1,700 to 5,000 rad, with only three patients (18%) receiving less than 3,000 rad to any field. With a median follow-up of over 4 years, 88% achieved a complete response, with median actuarial disease-free survival (DFS) of 19 months (range, 4 to 61+). Actuarial median survival was 64 months, with a range of 4 to 134+ months. Nine patients (53%) are currently alive with three (18%) in continuous complete remission (CR) for 24, 30, and 61 months. In addition, four patients relapsing after salvage radiotherapy are now in CR following additional therapy. Patients younger than 35 years of age had a significantly increased overall survival when compared with older patients (P less than .005). An initial complete response to chemotherapy lasting 12 or more months appeared to be a favorable prognostic factor, although small patient numbers preclude statistical significance. Comprehensive salvage radiotherapy is of significant benefit in patients with advanced Hodgkin's disease relapsing after combination chemotherapy in nodal and/or pulmonary sites.