No abstract available.
Colloid Cysts* ; Colloids* ; Lateral Ventricles*

The cysts of the anterior third ventrilce were first described by Wallman in 1858. These cysts have been thought to originate from a paraphyseal remnant in the telencephalic portion of the third ventricle, from a diencephalic ependymal pouch, or from the epithelium of the choroid plexus. Dandy reported 31 cases in 1933 where this condition had been found at necropsy and added 5 cases of his own in which surgical excision had been achieved with but a single postoperative death. Since Wallman's appeared before the age of 10 and in only 3 before the age of 2. We report a case of colloid cyst the third ventricle in the age of 23 months and the literature of this disease has been reviewed.
Choroid Plexus ; Colloid Cysts* ; Colloids* ; Epithelium ; Third Ventricle*

Colloid cyst is a congenital lesion which is thought to be derived from the primitive neuroepithelium, and is most frequently located in the anterior half of the third ventricle. Colloid cysts rarely occur in the pituitary gland, and we describe a case of pituitary colloid cyst, including the CT, MRI and pathologic findings.
Colloid Cysts* ; Colloids* ; Magnetic Resonance Imaging ; Pituitary Gland* ; Third Ventricle

To review recent advances in endoscopic techniques for treating intraventricular lesions via transcortical passage. Articles in PubMed published since 2000 were searched using the keywords ‘endoscopy,’‘endoscopic,’ and ‘neuroendoscopic.’ Of these articles, those describing intraventricular lesions were reviewed. Suprasellar arachnoid cysts (SACs) can be treated with ventriculo-cystostomy (VC) or ventriculo-cysto-cisternostomy (VCC). VCC showed better results compared to VC. Procedure type, fenestration size, stent placement, and aqueductal patency may affect SAC prognosis. Colloid cysts can be managed using a transforaminal approach (TA) or a transforaminal-transchoroidal approach (TTA). However, TTA may result in better exposure compared to TA. Intraventricular cysticercosis can be cured with an endoscopic procedure alone, but if pericystic inflammation and/or ependymal reaction are seen, third ventriculostomy may be recommended. Tumor biopsies have yielded successful diagnosis rates of up to 100%, but tumor location, total specimen size, endoscope type, and vigorous coagulation on the tumor surface may affect diagnostic accuracy. An ideal indication for tumor excision is a small tumor with friable consistency and little vascularity. Tumor size, composition, and vascularity may influence a complete resection. SACs and intraventricular cysticercosis can be treated successfully using endoscopic procedures. Endoscopic procedures may represent an alternative to surgical options for colloid cyst removal. Solid tumors can be safely biopsied using endoscopic techniques, but endoscopy for tumor resection still results in considerable challenges.
Arachnoid Cysts ; Biopsy ; Colloid Cysts ; Cysticercosis ; Diagnosis ; Endoscopes ; Endoscopy ; Inflammation ; Prognosis ; Stents ; Ventriculostomy

BACKGROUND AND PURPOSE: Intraoperative neurophysiological monitoring (IONM) using upper and lower somatosensory evoked potentials (SSEPs) is an established technique used to predict and prevent neurologic injury during intracranial tumor resections. Endoscopic port surgery (EPS) is a minimally-invasive approach to deep intraparenchymal and intraventricular brain tumors. The authors intended to evaluate the predictive value of SSEP monitoring during resection of intracranial brain tumors using a parallel endoscopic technique. METHODS: A retrospective review was conducted of patients operated on from 2007-2010 utilizing IONM in whom endoscopic ports were used to remove either intraparenchymal or intraventricular tumors. Cases were eligible for review if an endoscopic port was used to resect an intracranial tumor and the electronic chart included all intraoperative monitoring data as well as pre- and post-operative neurologic exams. RESULTS: 139 EPS cases met criteria for inclusion. Eighty five patients (61%) had intraparenchymal and fifty four (39%) had intraventricular tumors or colloid cysts. SSEP changes were seen in eleven cases (7.9%), being irreversible in three (2.2%) and reversible in eight cases (5.8%). Seven patients (5.0%) with intraparenchymal tumors had SSEP changes which met our criterea for significant changes while there were four (2.9%) with intraventricular (p-value=0.25). Five patients suffered post operative deficits, two reversible and two irreversible SSEP changes. Only one case exhibited post operative hemiparesis with no SSEP changes. The positive predictive value of SSEP was 45.4% and the negative predictive value was 99.2%. CONCLUSIONS: Based on the high negative and low positive predictive values, the utility of SSEP monitoring for cylindrical port resections may be limited. However, the use of SSEP monitoring can be helpful in reducing the impact of endoscopic port manipulation when the tumor is closer to the somatosensory pathway.
Brain Neoplasms ; Colloid Cysts ; Evoked Potentials ; Evoked Potentials, Somatosensory* ; Humans ; Monitoring, Intraoperative ; Paresis ; Retrospective Studies

Bronchogenic cysts are rare congenital malformations that result from an abnormal development of the ventral foregut budding of the tracheobronchial tree at the time of organogenesis. They are usually located in the mediastinum and intrapulmonary regions. Localization in the cervical area is unusual, and specially, bronchogenic cysts presenting as thyroid and perithyroid cyst are quite rare. We report a case of bronchogenic cyst mimicking a thyroid colloid cyst. We tried percutaneous ethanol injection at 3 times for treatment of this thyroid cyst, but we failed, because of intractable cough. After cyst excision with thyroid lobectomy, we diagnosed the lesion to bronchogenic cyst. Bronchogenic cyst should be considered in the differential diagnosis of perithyroid cyst, which especially the lesion is intolerable cyst to enthanol injection.
Bronchogenic Cyst* ; Colloid Cysts ; Cough ; Diagnosis, Differential ; Ethanol ; Mediastinum ; Organogenesis ; Sclerotherapy ; Thyroid Gland* ; Trees

Colloid cyst of the third ventricle is rare intracranial lesion. It has been estimated that they comprise approximately 0.55% of all tumors of the brain. A new interest has been developed in this lesion, which is completely benign histologically but, because of its deep and strategic location, poses a difficult therapetic problem. The contrast between the histological benignancy and the risk of morbidity and mortality associated with often surgical exploration and removal has led to alternative procedures. We reported here a 33-year-old male patient with colloid cyst of the third ventricle presenting with headache and vomiting. Who was treated by stereotacic removal utilizing CRW stereotactic system and followed up post-operatively for more than 3 years.
Adult ; Brain ; Colloid Cysts* ; Colloids* ; Headache ; Humans ; Male ; Mortality ; Third Ventricle* ; Vomiting

About one tenth of all CNS neoplasms involves the brain. Due to their location in the ventricles they often present similar nonspecific clinical manifestation. Localization and differential diagnosis are dependent on radiological investigation. For the identification of specific CT characteristics of the intraventricular tumors and the differental diagnosis, we retrospectively analyzed 22 pathologically proved cases seen on CT. Important differential features included age and sex of the patient, the location within the ventricle, and the morpholgic appearance of the mass and density on CT before and after intravenous administration of contrast material. Meningiomas (4 cases) and a germinoma showed increased density on the precontrast CT scans, and demonstrated dense uniform enhancement of the postenhanced scan. Choroid plexus papillomas (3 cases) showed dense uniform contrast enhancement. Intraventricular neurocytomas (3 cases) demonstrated characteristic attachment to the septum pellucidum, confinement of the lateral and third ventricle, and calcification within the mass Colloid cysts (2 cases) showed characteristic location of anterosuperior aspect of the third ventricle. In conclusion, CT findings of intraventricular tumors are usually nonspecific. The location of the mass and the patient's age are the most helpful information in the differential diagnosis.
Administration, Intravenous ; Brain ; Colloid Cysts ; Diagnosis ; Diagnosis, Differential ; Germinoma ; Humans ; Meningioma ; Neurocytoma ; Papilloma, Choroid Plexus ; Retrospective Studies ; Septum Pellucidum ; Third Ventricle ; Tomography, X-Ray Computed