title: Colloid cysts with and without ventriculomegaly: role of intraoperative real-time ultrasound.
abstract: Intraoperative real-time ultrasound was used to assist localization and surgical removal of colloid cysts in patients without ventriculomegaly. In the most commonly used surgical approach for removal of colloid cysts, dilated lateral ventricles can expedite the localization of lesions because, once entered surgically, a dilated ventricle offers more space near the foramen of Monro in which to work. Additionally, the enlargement of the foramen of Monro, seen with hydrocephalus, provides greater accessibility to the colloid cyst. In patients with symptoms related to the colloid cyst. In patients with symptoms related to intermittent obstruction of cerebral fluid flow but with normal-sized ventricles, the precise localization of the foramen of Monro and colloid cyst is more difficult and may result in unnecessary exploration/resection of brain. Using intraoperative ultrasound, the colloid cyst and adjacent anatomic structures can be clearly visualized regardless of ventricular size. Intraoperative ultrasonography has a unique role in the operative treatment of patients with colloid cysts and nondilated ventricles.
mesh_terms: D000293:Adolescent; D000328:Adult; D001927:Brain Diseases / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D002552:Cerebral Ventricles / Q000601:surgery; D003560:Cysts / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D007430:Intraoperative Care; D008297:Male; D014463:Ultrasonography