Abstract
Application of microvascular free flap is now favored for head and neck reconstruction following cancer resection. However pedicled flaps still play an important role in reconstruction because of reliability and ease of preparation. The infrahyoid myocutaneous flap (IHMCF) represents a reliable pedicled flap including strap muscles. The major blood supply of IHMF is derived from the superior thyroid artery. We report an 80-year-old male patient with adenoid cystic carcinoma of floor-of-mouth, T3N1M1. The patient suffered severe oral pain, and resection of the primary lesion was performed as a local treatment. Oral floor defects after tumor ablation were reconstructed with IHMCF. After surgery, although partial necrosis of the epithelial flap was evident, the donor site was primarily closed. The patient experienced no complications and recovered without oral pain. We herein describe the clinical course and the technique and critical points of the surgery.