CPT® Code 61583

Craniofacial approach to anterior cranial fossa; intradural, including unilateral or bifrontal craniotomy, elevation or resection of frontal lobe, osteotomy of base of anterior cranial fossa

The craniofacial approach to the anterior cranial fossa (ACF) is a specialized surgical technique utilized primarily for accessing and treating conditions affecting the frontal lobe, such as neoplastic tumors and vascular lesions located within the sinus and orbit. The ACF is anatomically defined by the frontal, ethmoid, and sphenoid bones, with its floor corresponding to the roof of the orbits and centrally aligning with the vault of the nasal cavity and the fovea ethmoidalis. This approach can be performed through either a unilateral or bifrontal craniotomy, which involves the elevation or resection of the frontal lobe and may include an osteotomy of the base of the anterior cranial fossa. The surgical procedure begins with a precise incision, typically starting less than one centimeter anterior to the tragus and just above the zygomatic arch, extending superiorly to the frontal midline for unilateral craniotomies, or ear to ear for bifrontal craniotomies. The dissection process involves careful navigation through various layers of tissue, including the subcutaneous tissue, galea, and superficial temporalis fascia, to ultimately expose the underlying bone. This meticulous approach allows for the effective resection of lesions while minimizing damage to surrounding structures, thereby facilitating optimal patient outcomes.