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M Yedeas

Publications and source records attributed to M Yedeas.

4 recordsLinked to original sources
PubMed2006

[Vermian epidermoid cyst revealed by head injury].

Vermian epidermoid cyst developing in the fourth ventricle is very rare. We report a case observed in a 24-year-old man, who presented severe headache, dizziness and a blurred vision following head injury. Examination revealed a discrete gait disturbance. Cerebral CT-scan showed a large hypodense lesion of the posterior fossa without contrast enhancement. MRI demonstrated the vermian location of this lesion which displaced the roof of the fourth ventricle upward and the brainstem forward. A suboccipital approach allowed total removal of a well-encapsulated epidermoid cyst, non adherent to the floor of the fourth ventricle. The postoperative course was uneventful.

Adult↗
PubMed1999

[Cerebral stereotactic biopsy and surgery: Report of 100 cases].

OBJECTIVE: To report the results of the use of the stereotactic techniques in the management of intra cranial lesions. MATERIALS AND METHODS: Between july 1994 and march 1998, we carried out 117 stereotactic procedures of whom only 100 cases were analyzed. All the procedures were achieved after a CT scan. Patients were separated in two groups: (A) stereotactic biopsy (91 patients), (B) surgery with laser guidance (9 patients). The mean age in group A was 38 years (2-75 years) versus 27 years (11-66 years) in group B. The sex-ratio was 1.3. RESULTS: In the group A, the correct pathological diagnosis was obtained in 91.2% of cases. Glial tumors was the frequent histopathological variety of tumor (67.47%). Only one patient was operated after biopsy for a bilateral meningioma of the anterior 1/3 of the falx. There was only one death (1.09%) and 3.29% of transitory complications. In the group B, all patients were operated with laser guidance. Thirty seven per cent of patients underwent radiotherapy after the stereotactic biopsy or surgery. CONCLUSION: Stereotactic biopsy is a reliable method for the histopathological diagnosis of deep-seated brain lesions. Surgery with laser guidance is a useful alternative for the management of small deep-seated lesions or lesions located in functional areas.

Adolescent↗
PubMed1992

[Laser microsurgery of meningioma. An analysis of a consecutive series of 164 cases treated surgically by using different lasers].

Over a six years period, 224 laser procedures were performed in our clinic, of these 164 (72%) involved meningiomas of various intracranial and spinal locations; 82 (50%) tumors were located in the posterior fossa, 36 (32%) were suprasellar or parasellar meningiomas: a carbon dioxide laser was used in 56 cases, a double wave length YAG laser in 101 cases, and recently a simultaneous Nd YAG and CO2 combolaser in 7 cases. Complete tumor removal was accomplished in 83% of cases and overall mortality was 3%. We think that microscope guided laser techniques represents a significant advancement in the ability to remove deep situated meningiomas that might prove difficult to extirpate by conventional microsurgery. The advantages of these methods include: 1. reduced brain retraction; 2. the ability to operate with smaller and different exposures; 3. a reduced amount of mechanical manipulation by vaporizing in first the dural attachment; 4. improved operative precision and 5. decreased intra operative blood loss.

Adult↗