Prophylactic External Irradiation in Differentiated Thyroid Cancer: A Retrospective Study over a 30-Year Observation Period
- 1 January 1994
- journal article
- research article
- Published by S. Karger AG in Oncology
- Vol. 51 (4) , 372-379
- https://doi.org/10.1159/000227368
Abstract
Following surgery which left no macroscopic residue, 114 patients with differentiated thyroid cancer (58 papillary, 56 follicular) were subgrouped on the basis of the dose of externally applied prophylactic postoperative radiation: group 1 received an adequate dose of radiation (≥4,500 cGy of telecobalt, ≥4,000 R of orthovoltage therapy), while group 2 received an inadequate dose of radiation (this group included non-irradiated patients). Local/regional-relapse-free survival (LRRFS), distant-metastatic-relapse-free survival (DMRFS) and total-cause-specific survival (TCSS) were calculated by means of life-table analysis for each histologic type. TCSS and LRRFS were significantly (pKeywords
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