Contralateral submental artery island flap for oral tongue reconstruction — a retrospective study in patients with oral tongue squamous cell carcinoma

Background

Oral squamous cell carcinoma (OSCC) is a leading cause of cancer-related deaths in developing countries. The oral tongue is the most common site involved by OSCC. About one-third of the patients have neck nodal metastasis at presentation. Oral tongue reconstruction after resection for cancer is necessary for proper rehabilitation. For patients who are medically unfit for prolonged surgery like a free tissue transfer, local flaps are employed for tongue reconstruction. The submental flap is a popular option. However, when there is an extensive floor of mouth involvement or bulky nodal disease in ipsilateral level 1, submental flap harvesting based on contralateral facial vessels is possible without compromising oncological safety. This study discusses the feasibility and outcomes of contralateral submental artery island flap (SMIF) for reconstruction after resection of oral tongue carcinoma in a retrospective series of 34 patients followed up for a median of 8.5 months.

Results

Of the 34 oral tongue cancer patients in the study, 16 had neoadjuvant chemotherapy before surgery. Thirty-three underwent bilateral neck dissection. Two patients had partial flap loss, which was managed conservatively. Five patients had either locoregional or distant recurrence, but none in the flap site. Three had pathological positive nodes at ipsilateral level 1b, and one had pathologically positive nodes at contralateral level 1b. Tongue motility and speech intelligibility were satisfactory on follow-up.

Conclusion

In the properly selected patient, contralateral SMIF offers an oncologically safe and technically simpler alternative for free flap reconstruction.