CPT® Code 61607

Resection or excision of neoplastic, vascular or infectious lesion of parasellar area, cavernous sinus, clivus or midline skull base; extradural

The procedure described by CPT® Code 61607 involves the resection or excision of neoplastic, vascular, or infectious lesions located in the parasellar area, cavernous sinus, clivus, or midline skull base. This area is critical as it houses important structures such as the hypothalamus, optic chiasm, and pituitary gland, all of which are protected by the dura mater. The approach to access these lesions is performed through the sella turcica, which is a central region of the sphenoid bone. During the procedure, careful attention is given to preserve vital blood vessels and cranial nerves, particularly the carotid arteries and cranial nerves III, IV, and VI, which are situated within the cavernous sinus, as well as cranial nerve V, which is located outside its walls. The dura mater forms the inner walls of the cavernous sinus, ensuring that the pituitary gland remains separated from the brain tissue. The surgical technique may involve opening the dural tent to access the lesion, which is then excised or debulked as much as possible. Post-excision, the surgical site is meticulously checked for any bleeding, and the dural defect is repaired to prevent cerebrospinal fluid leakage. This procedure is significant in treating conditions affecting the midline skull base and surrounding structures, ensuring both the removal of the lesion and the preservation of critical neurological functions.