Evaluation of postoperative function in patients undergoing reconstruction following resection of superior and lateral oropharyngeal cancer: long-term outcomes of reconstruction with the Gehanno method.

Resection of the superior or lateral wall of the cancer-affected oropharynx can often lead to disturbed nasal breathing, dysphagia, and dysarthria. The authors used the Gehanno method to reconstruct these surgical defects and achieved favourable functional recovery soon after surgery. The present study was undertaken to analyze the long-term outcome and usefulness of this method. Reconstruction was carried out using the Gehanno method in 36 patients during the 10-year period between 1997 and 2007. Both short-term and long-term evaluations of the postoperative function were performed in 12 of the 36 cases. The postoperative function was favourably maintained in all 12 cases, but gradual deterioration was noted in some cases in which the forearm flap had been used for reconstruction. Conventionally, the forearm flap is considered suitable for the reconstruction of complex structures such as the oropharynx because of its excellent flexibility. The results suggest that if the forearm flap is used for reconstruction using the Gehanno method, the surrounding tissue is likely to undergo change over time. The rectus abdominis myocutaneous flap should be considered as the first-choice flap for reconstruction using the Gehanno method.