The two most common subtypes of Pituitary adenomas are Prolactinomas and non-functioning adenomas. Patients usually present with infertility, diminished libido, galactorrhea, visual manifestations, headache or manifestations of endocrine malfunction. Regarding Prolactinomas, medical treatment is usually administered before surgical resection, as most prolactinomas are highly responsive to it. Since the advent of endoscopic equipment, the transsphenoidal approach has been the surgical method of choice for treatment of pituitary adenomas.
OBJECTIVE:To evaluate the endoscopic transnasal transsphenoidal approach for resection of Pituitary adenomas in our institute in terms of the degree of tumor resection, the clinical, visual and endocrinological outcomes, and the complications.
PATIENTS AND METHODS:This is a retrospective single-institute study of 56 patients who underwent endoscopic transnasal transsphenoidal resection of pituitary macroadenomas and microadenomas in Suez Canal University Hospital from 01 January 2018 to 31 June 2022. We evaluated the endoscopic transnasal transsphenoidal approach for resection of pituitary adenomas in terms of the degree of tumor resection, clinical, visual and endocrinological outcomes, and complications.
RESULTS:In 43 patients (76.8%), gross total resection was accomplished. Endocrinological improvement was seen in 21 out of 24 patients with functioning adenomas (87.5%), including 16 patients with prolactinomas, and visual improvement was seen in 14 out of 16 patients with visual field impairment (87.5%). Seven patients (13%) experienced postoperative diabetes insipidus (DI), including three patients (5%) who had the condition for an extended period. Despite using fibrin glue and a multilayer closure, we had one patient (1.8%) with cerebrospinal fluid (CSF) leak. In this case, surgical exploration was performed, and a high-flow CSF leak was found despite the standard skull base reconstruction performed in the initial operation. A pedicled right middle turbinate flap was used for repair with stoppage of CSF leak. Five of our patients (8.9%) experienced recurrence. We did not experience major morbidities (meningitis, carotid artery or optic nerve injuries), and there were no mortalities.CONCLUSION: Endoscopic transnasal transsphenoidal resection of pituitary macroadenomas and microadenomas is a safe technique in experienced hands. A sounding knowledge of anatomy along with a detailed study of patients imaging is our map and roadmap.