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1.
Neurosurg Rev ; 47(1): 304, 2024 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-38965148

RESUMO

Trigonal meningiomas are rare intraventricular tumours that present a surgical challenge. There is no consensus on the optimal surgical approach to these lesions, though the transtemporal and transparietal approaches are most frequently employed. We aimed to examine the approach-related morbidity and surgical nuances in treating trigonal meningiomas. This retrospective review assimilated data from 64 trigonal meningiomas operated over 15 years. Details of clinicoradiological presentation, surgical approach and intraoperative impression, pathology and incidence of various postoperative deficits were recorded. In our study, Trigonal meningiomas most frequently presented with headache and visual deterioration. The median volume of tumours was 63.6cc. Thirty-one meningiomas each (48.4%) were WHO Grade 1 and WHO Grade 2, while 2 were WHO Grade 3. The most frequent approach employed was transtemporal (38 patients, 59.4%), followed by transparietal (22 patients, 34.4%). After surgery features of raised ICP and altered mental status resolved in all patients, while contralateral limb weakness resolved in 80%, aphasia in 60%, seizures in 70%, and vision loss in 46.2%. Eighteen patients (28.13%) developed transient postoperative neurological deficits, with one patient (1.5%) developing permanent morbidity. Surgery for IVMs results in rapid improvement of neurological status, though visual outcomes are poorer in patients with low vision prior to surgery, longer duration of complaints and optic atrophy. The new postoperative deficits in some patients tend to improve on follow up. Transtemporal and transparietal approaches may be employed, based on multiple factors like tumour extension, loculation of temporal horn, size of lesion with no significant difference in their safety profile.


Assuntos
Neoplasias Meníngeas , Meningioma , Procedimentos Neurocirúrgicos , Complicações Pós-Operatórias , Humanos , Meningioma/cirurgia , Meningioma/complicações , Feminino , Masculino , Pessoa de Meia-Idade , Adulto , Idoso , Resultado do Tratamento , Estudos Retrospectivos , Neoplasias Meníngeas/cirurgia , Procedimentos Neurocirúrgicos/métodos , Complicações Pós-Operatórias/epidemiologia , Neoplasias do Ventrículo Cerebral/cirurgia , Adulto Jovem
2.
Neurol India ; 72(3): 514-519, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-39041966

RESUMO

BACKGROUND AND OBJECTIVES: Stereotactic biopsies are a relatively safe and reliable way of tissue diagnosis and characterization of eloquent area lesions/neoplasm. However, predicting the accuracy of the site of biopsy with the desired/planned site is not always possible. We describe a technique to identify the precise location of the biopsy site in the post-operative computed tomography (CT) scan using the injection of a low volume of air into the biopsy cannula. METHODS: Hundred consecutive biopsies were performed in 80 adults/20 children (59 males/41 females, median age 51 years) over 3 years, consisting of 75 frameless and 25 frame-based stereotactic biopsies. After the biopsy specimens had been collected, a small volume of air (median 1 cc) was injected into the site. Post-operative CT was done within 4 hours of the biopsy to see the site of the air bubble, and the same was correlated with the histopathological accuracy. RESULTS: Intra-cranial air in the selected target was present in 95 patients (Grade 1 and 2), while the air was seen in the track (Grade 3) in 3% and at an unrelated site (Grade 4) in 2% of cases. Both Grade 4 biopsies were negative on histopathology (diagnostic yield = 98%). Two negative biopsies were reported, which were both predicted with the Grade 4 biopsy. The grading allowed uniform reporting across series and eliminated the chance of upgrading/downgrading the report due to wrong site sampling within the lesion/neoplasm. CONCLUSION: The air-injection manoeuvre proposed for use in stereotactic biopsies of intra-cranial mass lesions is a safe and reliable technique that allows the exact biopsy site to be located without any related complications.


Assuntos
Ar , Técnicas Estereotáxicas , Tomografia Computadorizada por Raios X , Humanos , Feminino , Masculino , Pessoa de Meia-Idade , Biópsia/métodos , Criança , Adulto , Pré-Escolar , Idoso , Adolescente , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/diagnóstico , Adulto Jovem
3.
Indian J Psychiatry ; 66(2): 208-212, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38523764

RESUMO

Bell's mania is the co-occurrence of delirium and mania. We present two cases of Bell's mania in a neurosurgical setting. The first case is of a 52-year-old male who presented with holocranial headache, disorientation, and manic symptoms for five months. He was found to have suprasellar craniopharyngioma. He significantly improved with olanzapine, but re-emergence of mood symptoms was noted after surgery. The second case is of a 42-year-old male who presented with a 15-day history of seizures and disorientation. He was found to have a dural arteriovenous fistula. He developed Bell's mania in the post-procedural period, which improved with olanzapine. Compression of the hypothalamo-pituitary stalk in the first case and vascular and inflammatory changes in the second case could have led to Bell's mania. Atypical age of onset and presence of neurological symptoms in patients presenting with psychiatric symptoms should raise the suspicion of an underlying organicity. Atypical anti-psychotics can be a useful management strategy for Bell's mania.

4.
World Neurosurg X ; 22: 100292, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38455252

RESUMO

Background: The supra-cerebellar infratentorial approach to pineal region tumours is versatile and safe corridor to lesions located below the deep veins. Monitoring of the extra-ocular muscle pathways using the evoked compound muscle action potential can lead to safer resections. Technical note: To describe the use of electrooculography and a three handed retractor less method for pineal region tumour surgeries. Material and methods: Intraoperative electrooculography uses recording done from two channels (horizontal and vertical)by inserting disposable subdermal needle electrodes along the periorbital area. The oculomotor nerve is being monitored as it exits the midbrain. Retractor-less three-handed-technique allows for minimal handling of the cerebellum while maximizing the operative corridor. Result: The oculomotor nerve was stimulated post resection and correspondingly led to improved symptoms post-operatively. Discussion and conclusion: We demonstrate a method for the intraoperative monitoring of the continuity of the oculomotor tracts and a three handed retractor-less method of resection of pineal region tumours. The placement of electrodes and area of stimulation need sound knowledge of anatomy of the region. Haemostasis at every step is absolutely essential to be able to visualize in the narrow corridor.

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