Revolutionizing surgical treatment at Mekelle University’s Ayder Hospitalno skull openings, no visible scars on the face or head, and a recovery that’s faster and smoother than ever before Mekelle University's Ayder Hospital is making medical history by offering the incredible Endoscopic Endonasal Trans-sphenoidal Surgery.. What used to cost hundreds of thousands of dollars overseas is now happening right here at our hospital, thanks to the groundbreaking surgical team led by the phenomenal Dr. Dejen Tekiea!