Combined direct hysteroscopic and real-time ultrasound guidance facilitating safe insertion of intra-uterine brachytherapy applicator for locally advanced cervical cancer with significant endocervical stenosis: A novel collaborative approach.

Locally advanced cervical cancer is treated with combined chemoradiation (CCRT) - with the radiotherapy component comprising delivery of both external beam (EBRT) and intra-uterine brachytherapy (IUBT). Following initial pelvic and tumour irradiation via EBRT, secondary tissue fibrosis can obliterate the vagina and / or endocervical canal. 30-88% of women will develop some degree of stenosis, with complete stenosis reported in up to 11% of patients - making accessing the uterine cavity to insert brachytherapy applicators challenging and high risk (Bran et al., 2006). This can result in inadvertent uterine perforation, occurring in 2-10% of cases (Irvin et al., 2002); with subsequent abandonment of both the procedure and proceeding to IUBT to complete treatment. Omission of IUBT confers an at least 10% reduction in overall survival (Karlsson et al., 2017). Whilst ultrasound-guided insertion has been previously described (Van Dyk et al., 2021), we present a surgical video demonstrating a novel technique. We instead utilise a combination of

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.