Abstract
Between 1972 and 1987, two hundred and five carcinoma patients were treated with surgery and postoperative radiotherapy. The histological confirmation of tumour-free margins was only predictive of significant differences in locoregional control in locally advanced disease. In addition, macroscopically assessed margins in advanced cases were predictive of survival probability. We suggest that the adjuvant radiotherapy was able to reduce the incidence of locoregional recurrence in the early stage microscopic positive group, hence the lack of a significant difference in the control rates. The effect on survival is therefore indirect. The advanced cases showed significantly reduced locoregional control rates and disease-specific survival times after macroscopic assessment of positive margins, possibly a sign of tumour extension beyond the margins of the radiation field. We compare our results with published reports of cases not receiving adjuvant therapy.
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