Pituitary neuroendocrine tumor with transsellar anastomosis concomitant with internal carotid artery agenesis: illustrative case.

Key Points

• This case aims to highlight the association of PitNET with unilateral internal carotid artery agenesis and its implications.
• Detailed imaging using digital subtraction angiography to identify vascular supply
• Surgical resection technique emphasizing preservation of the arachnoid plane
• Total resection of the tumor while maintaining endocrine function
• Successful identification of transsellar anastomosis as the sole vascular supply
• Total resection achieved without compromising endocrine function
• This case serves as the first reported instance of such an association