What is the Role of Endoscope during Microsurgery in the Posterior Cranial Fossa?

2015 ◽  
Vol 76 (S 01) ◽  
Author(s):  
Guilherme Montibeller ◽  
Joachim Oertel
2014 ◽  
Vol 42 (3) ◽  
pp. 85-88
Author(s):  
S Akhter ◽  
M Rahman ◽  
S Nobi ◽  
L Khondker ◽  
N Ahmed ◽  
...  

Schwannoma is one of the most common posterior cranial fossa tumours. Normal skull radiograph may not give any clue to diagnosis and further investigation with computed tomography or magnetic resonance imaging is necessary. This cross sectional study was carried out in the department of neurosurgery and the department of radiology and Imaging, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh during the period from July 2009 to June 2011 to evaluate the role of computed tomography in the diagnosis of schwannoma in the posterior cranial fossa. Total eighty nine patients with clinical features of posterior cranial fossa tumour were enrolled in this study. Mean age of the patients was 29.15±19.64 years. Computed tomography scan revealed that 38.2% had schwannoma, 24.7% had meningioma, 21.3% had astrocytoma, 15.7% medulloblastoma, 10.1% had brain stem glioma, 5.6% had ependymoma and for the rest 4.4%, 1.1% of each had epidermoid, metastatic, hemangioblastoma and others. After histopathological diagnosis 36.0% patients had schwannoma, 19.1% had astrocytoma, 15.7% had medulloblastoma, 11.2% had meningioma, 7.9% had brain stem glioma, 5.6% had ependymoma and rest 4.4% had epidermoid, metastatic, hemangioblastoma and others. Sensitivity of computed tomography to diagnose schwannoma was 100.0%, specificity 96.5%, positive predictive value 94.1%, negative predictive value 100.0% and accuracy 97.8%. It can therefore be concluded that computed tomography is a useful modality in the evaluation of schwannoma in the posterior cranial fossa. DOI: http://dx.doi.org/10.3329/bmj.v42i3.19002 Bangladesh Med J. 2013 Sept; 42 (3): 85-88


PROTEOMICS ◽  
2012 ◽  
Vol 12 (13) ◽  
pp. 2158-2166 ◽  
Author(s):  
Claudia Desiderio ◽  
Luca D'Angelo ◽  
Diana Valeria Rossetti ◽  
Federica Iavarone ◽  
Bruno Giardina ◽  
...  

2020 ◽  
Author(s):  
Ravish R keni ◽  
Surya Prakash Rao ◽  
Luis Rafael Moscote-Salazar ◽  
Harsh Deora ◽  
Quiñones-Ossa GA ◽  
...  

Abstract Background Seizures due to posterior fossa lesions is an uncommon phenomenon. In this study systemic literature review was done to i) study the incidence of seizures in posterior fossa lesions ii) determine factors associated with high risk for seizures and iii) ascertain role of prophylactic AEDs in such cases. Methods Systemic literature review was done, for the MeSH terms “posterior cranial fossa” AND “seizures” AND “anticonvulsants”. All original research articles, case reports and systematic reviews pertaining to seizures or use of anticonvulsants in posterior fossa lesions were considered for inclusion. Results A total of 79 cases of posterior fossa lesions, identified from 8 studies, were included for analysis. Incidence of seizures in posterior fossa lesions ranged from 1.8–5% in various studies. The highest incidence for seizures was reported with medulloblastoma, cerebellar haemorrhage and during microvascular decompression for cases of neurovascular conflict. The most significant risk factor for seizures in post-operative period was use to ventricular shunt or ventriculostomy. AEDs were administered symptomatically after the occurrence of seizures in 78 cases except for the use of prophylactic AEDs in a single case of posterior cranial fossa lipoma. Conclusion Seizures in association with posterior fossa lesions are rare and associated with a poor prognosis. Clinical detection can often be difficult and EEG helps in early diagnosis and treatment. Further studies are needed to confirm the role of prophylactic AEDs in high-risk cases.


2013 ◽  
Vol 94 (2) ◽  
pp. 221-227
Author(s):  
A T Zabbarova ◽  
E I Bogdanov ◽  
D K Khusainova ◽  
L S Fatkheeva

Aim. To analyze the prevalence and role of comorbidities in variety of clinical manifestations in patients with congenital occipital hypoplasia - «overcroded posterior cranial fossa» syndrome. Methods. Clinical history and physical examination of 200 patients (aged 16-74 years, males 108, females 92) with «overcrowded posterior cranial fossa» syndrome, including 134 with cerebellar ectopia, 92 with syringomyelia, 24 with hydrocephalus, were analyzed. Results. The diseases identified in patients with «overcrowded posterior cranial fossa» syndrome were combined into six groups: cardiovascular diseases (n=120; 60.0%), infectious and inflammatory diseases (n=39; 19.5%), gastrointestinal diseases (n=37; 18.5%), metabolic and endocrine diseases (n=31; 15.5%), diseases of the musculoskeletal system and connective tissue (including cervical vertebral stenosis (n=53; 26.5%), scoliosis (n=50; 25.0%), arthropathies (n=21; 10.5%), other diseases and pathological conditions (including mild traumatic brain injury (n=74; 37.0%), seizures (n=13; 6.5%). In patients with «overcrowded posterior cranial fossa» syndrome the prevalence of cardiovascular, gastrointestinal diseases, traumatic brain injury, obesity, primary or secondary cervical vertebral stenosis was significantly higher (p 0.05) compared to general population. In patients with syringomyelia a higher rate (p0.05) of scoliosis and traumatic brain injury was revealed. Conclusion. The prevalence of comorbidities in patients with «overcrowded posterior cranial fossa» syndrome was higher compared to general population. The differences of the type and rate of the concomitant diseases in patients with various forms of the syndrome may contribute to the variety of clinical manifestations of «overcrowded posterior cranial fossa» syndrome.


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