Duration of Weekly Cisplatin in Adjuvant Chemoradiotherapy for Stage IA-IIA Cervical Cancer

Treatment Schedule and Duration

The British Journal of Cancer recommends weekly cisplatin at 40 mg/m² for 6 weeks concurrent with external beam radiotherapy, followed by brachytherapy to complete the full treatment course within 8 weeks total 1, 2
Cisplatin 40 mg/m² is given weekly for 6 cycles during external beam radiotherapy, representing the standard dosing schedule established in landmark trials that demonstrated improved local control (level of evidence A) and overall survival (level of evidence B) 1, 3
The weekly regimen is administered concurrently with external beam radiation, not as a separate sequential treatment 2

The entire treatment course (external beam radiotherapy plus brachytherapy) should be completed in less than 8 weeks 4
External beam radiotherapy is delivered first, with weekly cisplatin administered during this phase 1, 2
Brachytherapy follows external beam treatment to complete the radiation component 1, 4

The optimal schedule has not been definitively established, but weekly dosing is most widely adopted 1, 2

The total radiation treatment time (external beam plus brachytherapy) must not exceed 8 weeks, as prolonged treatment duration negatively impacts local control 4
Weekly dosing allows for better dose distribution throughout the radiation course 2

Primary toxicities to monitor weekly include bone marrow suppression, gastrointestinal toxicity, which are greater than radiotherapy alone but are manageable with weekly monitoring 1