Of the transsellar transsphenoidalmeningoencephaloceles (TTSMEs), the true type presents with the hernial sac extending from the intracranium to the epipharynx through the sellar floor. The true type is the most serious and difficult to manage, especially when the hernial sac contains vital structures, such as the anterior cerebral artery, pituitary gland, optic nerve, hypothalamus, and third ventricle. Surgical outcome for true type TTSME is reported to be poor. We describe a successful case of endoscopic repair for a 36-year-old man with true type TTSME. Our success with endoscopic repair for true type TTSME in an adult is the first reported case. We believe that the endoscopic transsphenoidal approach allows less invasive surgery and provides an acceptable operative outcome in comparison with other microsurgical approaches.
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