Comparison of long-term outcomes between pull-through resection and mandibular lip-split surgery for T4a tongue/floor of mouth cancers

Abstract

Background

The purpose of this study was to determine whether the pull-through resection is better than the mandibular lip-split for advanced tongue/floor of mouth (FOM) cancers, which remains inconclusive.

Methods

A retrospective cohort study was performed on 91 patients with T4a tongue/FOM cancers from 2009 to 2014. Cases with mandibular resection were excluded. The pull-through resection was used when the mouth opening was ≥15 mm; otherwise the mandibular lip-split was used.

Results

Fifty-eight patients received pull-through resections and 33 underwent mandibular-lip splits and the mean follow-up periods were 42 and 45 months, respectively. Surgical margin, locoregional recurrence, and 5-year survival were similar between the 2 groups. The pull-through approach had a significantly shorter operation time, lower rates of flap infection, osteoradionecrosis, metal plate exposure, loss of tooth vitality, and better aesthetics.

Conclusion

Our data suggest that the pull-through resection does not compromise disease control for advanced tongue/FOM cancers and is superior to the mandibular lip-split in terms of operation time, postoperative complications, and aesthetics.

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