CONCLUSIONS: In the presence of a CSP and CV, endoscopic navigation into the third ventricle can be problematic via a transforaminal approach. Entry into the third ventricle was accomplished through an interforniceal fenestration immediately behind the anterior commissure. Because of the ventricular distortion, a stereotactic transcavum route was used for approaching the third ventricle. RESULTS: Four cases involving endoscopic surgery within the third ventricle (2 colloid cyst resections and 2 ETVs) were identified in which the surgical objective was accomplished through a septal cavum. Features of the intracavitary anatomy were assessed regarding their importance in approaching the third ventricle. METHODS: From a prospective database of endoscopic surgical cases were selected those cases in which the defined pathology necessitated surgery within the third ventricle and there was coexistent CSP and CV. Given the common occurrence of cavum septum pellucidum (CSP) and cavum vergae (CV), the endoscopic surgeon should be familiar with that particular anatomy especially as it pertains to surgery within the third ventricle.
OBJECT: Intraventricular anatomy has been detailed as it pertains to endoscopic surgery within the third ventricle, particularly for performing endoscopic third ventriculostomy (ETV) and endoscopic colloid cyst resection. Brain MR imaging revealed a 2-cm, well-enhanced mass in the third ventricle and hydrocephalus. The authors report the first case of a chordoid meningioma in the third ventricle. CONCLUSION: The pre-coronal, paramedian minicraniotomy is safe and effective for the total excision of colloid cysts of the third ventricle.Ī prototype epicranial apparatus was placed surgically, allowing easy and exact localization of the third ventricle for infusions or sampling.Įndodermal sinus tumor, or yolk sac tumor, is the most common malignant neoplasm of germ cell origin and usually occurs in infant testes or ovaries.(1) On rare occasions, the tumor may arise from extragonadal sites, including sacrococcygeal region, uterus, vagina, prostate, retroperitoneum, liver, mediastinum, pineal gland, and third ventricle.(1) The orbit is an unusual location for the primary development of this neoplasm.(2,3) We report the case of a girl with primary orbital endodermal sinus tumor who was managed with exenteration and chemotherapy with the result of a disease-free survival of 9 years. Nineteen cases of symptomatic colloid cysts of the third ventricle whose diagnoses were proven by CT and/or MRI were subjected to microsurgery in the period from June 2004 to May 2007. OBJECTIVE: Microsurgical excision of colloid cysts of the third ventricle is accomplished along the transcallosal or the transfrontal routes. The authors report on a patient with Terson's syndrome after endoscopic colloid cyst resection of the third ventricle.
Key words: third ventricle, hypothalamic-pituitary adrenal axis, food intake, body weight.ĪM2 and ANG II injected into the third ventricle increased arterial pressure, while AM5 decreased it in a dose-dependent manner, and both AM2 and AM5 decreased blood pressure when injected to fourth ventricle. Third ventricle administration of a CRFR2 antagonist, antisauvagine 30, had no effect in RRS rats, but caused sustained weight loss in control animals. Multiple lesions with perifocal oedema and severe compression of the third ventricle were seen with computed tomography (CT) of the brain.
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