COMPLEXITY OF PITUITARY ADENOMA SURGERY

• Published in: Romanian neurosurgery Vol. 38; no. Special Issue
• Main Authors: Cristian-Norbert Ionescu, Adrian-Florian Balasa, Rares Chinezu, Gheorghe Mühlfay
• Format: Journal Article
• Language: English
• Published: London Academic Publishing 01-11-2024
• Subjects: CSF leak; nasoseptal flaps; pituitary adenoma; transnazosphenoidal
• ISSN: 1220-8841; 2344-4959
• DOI: 10.33962/roneuro-2024-102

Introduction Pituitary adenomas are the most common intraselllar tumors, representing 16% of all intracranial lesions. Although the symptomatology is very complex, it requires a multimodal treatment plan, in order to cover all corners of this combined pathology. Mostly the treatment is surgical, hormonal or combined. The transnazosphenoidal corridor offers a optimal visualitation of the anatomic location (via microscope or endoscope) but also comes with a variety of morbidities, one of the most important being the cerebrospinalfluid fistula (CSF leak).   Objective We effectuated a retrospective cohort study in which we included patients with pituitary adenoma who were operated in the Clinic of Neurosurgery from Targu-Mures Emergency County Hospital between January 2018 and April 2024 with full documentation, including complications (apoplexy, infections, CSF fistula etc.).   Results A total of 45 patients passed the inclusion criteria with a predominance of female patients (60%, n=27) with a mean age of 55.77 years. Analizing the clinical and paraclinical data, there were 39 patients with macroadenoma (vs. microadenoma n=6), with the dominant symptomatology being headache (86.66%) and visual disturbances (66.66%). In 32 cases the transnazosphenoidal (TSS) approach was used (1 case endoscopic and 31 cases microscopic), in 10 cases pure transcranian with modified pterional or subfrontal craniotomy and in 3 cases there was a combined approach. Postoperative complications were encountered in 8 cases (17.77%), and death in 1 case. 6 patients presented postoperative CSF fistula. In 16 cases we encountered postoperative Diabetes Insipidus with a significant difference in the tumor volume favoring this manifestation (p=0.0001). There was no significance found between the volume of the tumor and postoperative CSF leak (p=0.665). In 31 cases (68.88%) the TSS approach was used and the closing of the sphenoid sinus and cranial base was effectuated in a classic manner with fat, fascia and muscle; in additional cases specified glues were used.   Conclusions Our study wants to reflect on the importance of anterior/middle cranial base closure, taking into account the possible postoperative complications. It is important to be aware of the technique of different nasoseptal flaps in order to prevent CSF fistula and reduce postoperative complications.