1/460. craniopharyngioma of the pineal region.Craniopharyngiomas generally develop either in the suprasellar region or in both suprasellar and intrasellar regions. We report on a nontypical location of the craniopharyngioma in the pineal region. An 8-year-old boy was admitted to the department of pediatric neurosurgery in a grave condition. An MRI scan of the brain was performed after the neurological examination and revealed a large neoplasm situated in the posterior part of the III ventricle and in the pineal region, measuring 8.5x6.5x5 cm. The size of the tumor and its location meant it was occluding three ventricles, with subsequent hydrocephaly. Total removal of the tumor was carried out. Microscopic investigation of the tissue removed showed the typical structure characteristic for craniopharyngioma of the adamantinomatous type. Results of a consultation 6 months after the operation revealed that the patient was feeling well, attending school regularly and had finished the first semester with excellent results. On control MRI scan no tumor was found.- - - - - - - - - - ranking = 1keywords = suprasellar (Clic here for more details about this article) |
2/460. Anatomical and embryological considerations in the repair of a large vertex cephalocele. Case report.The case of a neonate with a large vertex cephalocele is presented. The anatomical features of this anomaly were evaluated by means of magnetic resonance imaging and magnetic resonance angiography. Fusion of the thalami, dysgenesis of the corpus callosum, and failure of adequate formation of the interhemispheric fissure were characteristics of the major cerebral anomalies associated with the cephalocele. The absence of a falx in the midline, a split configuration of the superior sagittal sinus, and a dysgenetic tentorium with a concomitant abnormal venous drainage pattern were found in association with a large dorsal cyst. Repair of the anomaly was undertaken on the 3rd postnatal day. A cerebrospinal fluid shunt was required to treat hydrocephalus on Day 30. The child is well at age 3 years, but with significant developmental delay. The pathogenesis of this vertex cephalocele relates to semilobar holoprosencephaly and dorsal cyst formation. In addition, a disturbance in the separation of the diencephalic portion of the neural tube from the surface ectoderm or skin during the final phases of neurulation had occurred to help create the large cephalocele. Detailed preoperative imaging studies and awareness of the embryology and anatomy of this lesion facilitated the repair of the cephalocele. The prognosis of the child is determined not only by the presence of hydrocephalus, but also by the number of associated major cerebral anomalies. Options for treatment are discussed.- - - - - - - - - - ranking = 1.3535543323067keywords = cyst (Clic here for more details about this article) |
3/460. Delayed recurrence of cerebellar abscess 20 years after excision of dermoid cyst and sinus.A patient is described who suffered a greatly delayed reappearance of a cerebellar abscess, 20 years after excision, in childhood, of a midline dermoid cyst with associated abscess formation. A similar organism was cultured on both occasions.- - - - - - - - - - ranking = 3.3838858307667keywords = cyst (Clic here for more details about this article) |
4/460. Endoscopic removal of a third ventricular cysticercal cyst.We report the case of a young man who presented with acute obstructive hydrocephalus previously treated with bilateral ventriculo-peritoneal shunts. Previous magnetic resonance imaging studies were consistent with aqueduct stenosis; no intraventricular pathology was identified. neuroendoscopy was performed in order the third ventricle and perform a third ventriculostomy. This revealed a cysticercal lesion of the third ventricle which was removed endoscopically. In addition, a third ventriculostomy was performed and both shunt systems removed. Following a course of albendazole the patient went on to make a full recovery, and currently remains shunt independent.- - - - - - - - - - ranking = 6.0909944953801keywords = cyst (Clic here for more details about this article) |
5/460. Provision of a neuroendoscopy service. The Southampton experience.BACKGROUND: A series of 21 patients (aged 1 week to 80 years) underwent a total of 22 neuroendoscopic procedures in our Unit in the period July 1993 to January 1996. methods: The procedures were performed by one surgeon familiar with the technique using the Stortz rigid neuroendoscope system. The most common indication for neuroendoscopy was obstructive hydrocephalus. The most frequently performed procedure was third ventriculostomy and tumor biopsy. The intended surgical procedure was successfully performed in all but two of the cases (attempted septostomy and internal cyst drainage) were both abandoned due to unrecognisable anatomy. RESULTS: Of the 19 patients treated by fenestration or ventriculostomy to relieve hydrocephalus, 5 eventually required definitive shunting procedures. CONCLUSIONS: Complications relating directly to the neuroendoscopy occurred in 2 patients (bleeding requiring temporary external ventricular drain) and there were no surgical deaths.- - - - - - - - - - ranking = 0.67677716615334keywords = cyst (Clic here for more details about this article) |
6/460. December 1998--16 year old female with headaches, lethargy and a sellar/suprasellar mass.A 16 year female with a history of developmental delay and shunted hydrocephalus presented with two months of progressive headaches, lethargy and visual disturbances. An MRI of the brain revealed a sellar and suprasellar cystic mass which was absent on a previous MRI six years earlier. The pre-operative clinical diagnosis was pituitary adenoma vs. craniopharyngioma. Histologically, the fibrous wall of the ciliated epithelial-lined cyst was thickened by non-caseating granulomatous inflammation, hemorrhage, hemosiderin, and cholesterol clefts, consistent with cyst rupture. Rathke's cleft cysts are uncommon symptomatic lesions in young people, and must be distinguished from craniopharyngioma.- - - - - - - - - - ranking = 5.2144893048987keywords = cyst, suprasellar, cleft (Clic here for more details about this article) |
7/460. Development of a middle fossa arachnoid cyst. A theory on its pathogenesis.The progression of congenital arachnoid cysts has seldom been documented. We report the case of a child who was diagnosed with arrested hydrocephalus at the age of 13 months. neuroimaging studies performed when the girl was 22 months old showed the appearance of an arachnoid cyst in the right middle fossa, while the previously enlarged ventricles seemed to have decreased in size. To the best of our knowledge, the paradoxical expansion of an arachnoid pouch following a reduction in the size of the ventricular system has not previously been documented. We advance the hypothesis that the development of some cases of arachnoid cyst might be pathogenically related to impaired CSF dynamics associated with pre-existing hydrocephalus. We also briefly review the pertinent literature on the formation and evolution of congenital cerebral arachnoid cysts.- - - - - - - - - - ranking = 5.4142173292267keywords = cyst (Clic here for more details about this article) |
8/460. siblings with a syndrome of hydrocephalus with patent aqueduct, growth retardation and associated anomalies.We report on male siblings with hydrocephalus with associated abnormalities including growth retardation, midline cleft palate and bilateral 'fisting' of the hands, providing evidence for a familial syndrome of hydrocephalus and associated anomalies.- - - - - - - - - - ranking = 0.003690320142653keywords = cleft (Clic here for more details about this article) |
9/460. Abdominal cerebrospinal fluid pseudocyst in a severely handicapped patient with hydrocephalus.We present a case of an abdominal cerebrospinal fluid pseudocyst as a rare complication of a ventriculoperitoneal shunt. The patient is a severely handicapped bedridden spastic quadriplegic with hydrocephalus. He underwent surgical reconstruction of a shunt tube because of shunt disconnection at the age of 12 years. fever and frequent vomiting developed 2 months after surgery, and abdominal fullness gradually became severe. He was diagnosed as having an abdominal cerebrospinal fluid pseudocyst on abdominal ultrasonography. If a shunt dysfunction is suspected, this type of cyst should also be considered, and abdominal ultrasonography should be performed as one of the screening tests for determining the cause of the shunt dysfunction.- - - - - - - - - - ranking = 4.7374401630734keywords = cyst (Clic here for more details about this article) |
10/460. Endoscopic ventriculocystocisternostomy of a quadrigeminal cistern arachnoid cyst. Case report.The authors present the case of an elderly patient with a quadrigeminal arachnoid cyst who was successfully treated with endoscopic fenestration through the posterior wall of the third ventricle via the anterior horn of the lateral ventricle. This 71-year-old man suffered from progressive gait instability and disorientation. Radiological examination revealed hydrocephalus caused by a quadrigeminal arachnoid cyst. The patient underwent endoscopic fenestration of the quadrigeminal cistern arachnoid cyst and third ventriculostomy via one burr hole placed at the coronal suture. This method is less invasive and is effective for quadrigeminal cistern arachnoid cyst and accompanying hydrocephalus.- - - - - - - - - - ranking = 8.1213259938401keywords = cyst (Clic here for more details about this article) |
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