Abstract

Although few studies have shown the effectiveness of adjuvant therapy with acridine orange (AO) for soft tissue sarcoma (STS) patients, no study has investigated this among cases with marginal resection. The aim of the study was to evaluate the effectiveness of AO therapy directly by comparing it to marginal resection cases that did not receive AO. This retrospective study included 19 and 33 patients with STS who received AO therapy (AO group) and marginal resection without AO therapy (non-AO group), respectively. The patients' clinical information was collected, and the clinical courses were compared. The local recurrence rate in the AO group was significantly lower than that in the non-AO group (p<0.05). The local recurrence-free survival curves significantly differed between the two groups (p<0.05). High grade malignancy and no treatment with AO were identified as risk factors for local recurrence (p<0.05). AO therapy strongly suppressed local recurrence after marginal resection of STS.

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