Galeal pedicle flap of the occipital region for pharynx reconstruction: anatomic and clinical considerations.

Abstract

Surgeons are still searching for the ideal method for pharynx reconstruction after tumor ablation. The objective of this study was to prove the anatomic and clinical viability of an occipital galeal pedicle flap for hypopharynx reconstruction. We studied anatomic details in 50 fresh adult cadavers. The dissections were performed after posterior galea exposure, silicone injection in occipital vessels, and mobilization of the galeal flap with an 8 x 8 cm square of galea. We also used the proposed flap in three clinical cases after laryngopharyngectomy. The surgical technique and its problems are described. Some of the anatomic data obtained are as follows: occipital artery diameter, 2.69 mm (mean); occipital artery length, 134.25 mm; area of occipital vessels network on galea, 148.77 cm2; pedicle length, 116.63 mm; and success in rotation to pharynx region (100 percent). The flap showed good functional and cosmetic results when used in three patients. A partial necrosis occurred in one case. The pedicled galeal occipital flap has favorable anatomic characteristics for use in head and neck reconstruction. Additional studies are necessary to provide more substantial information about its clinical viability.