scholarly journals Co-existence of meningioma and epidermoid cyst in the posterior cranial Fossa

2020 ◽  
Vol 20 ◽  
pp. 100682
Author(s):  
Andrii Sirko ◽  
Dmytro Romanukha
2016 ◽  
Vol 30 (3) ◽  
pp. 461-466
Author(s):  
Vivek Kumar Kankane ◽  
Gaurav Jaiswal ◽  
Tarun Kumar Gupta

Abstract Epidermoid cysts are benign slow growing more often extra-axial tumors that insinuate between brain structures, we present the clinical, imaging, and pathological findings in 35 years old female patients with atypical epidermoid cysts which was situated anterior, middle & posterior cranial fossa. NCCT head revealed hypodense lesion over right temporal and perisylvian region with extension in prepontine cistern with mass effect & midline shift and MRI findings revealed a non-enhancing heterogeneous signal intensity cystic lesion in right frontal & temporal region extending into prepontine cistern with restricted diffusion. Patient was detoriated in night of same day of admission, emergency Fronto-temporal craniotomy with anterior peterousectomy and subtotal resection was done. The histological examination confirms the epidermoid cyst. The timing of ectodermal tissue sequestration during fetal development may account for the occurrence of atypical epidermoid cysts.


Skull Base ◽  
2009 ◽  
Vol 19 (03) ◽  
Author(s):  
Shinya Ishimura ◽  
Takayuki Ohira ◽  
Masahito Kobayashi ◽  
Tadashige Kano ◽  
Maaya Orii ◽  
...  

Skull Base ◽  
2009 ◽  
Vol 19 (S 02) ◽  
Author(s):  
N. Syrmos ◽  
Ch. Iliadis ◽  
J. Marakomichelakis ◽  
G. Gavridakis ◽  
V. Valadakis ◽  
...  

1970 ◽  
Vol 110 (1) ◽  
pp. 39-49 ◽  
Author(s):  
F. GALLIGIONI ◽  
R. BERNARDI ◽  
M. PELLONE ◽  
G. IRACI

1989 ◽  
Vol 32 (4) ◽  
pp. 300-303 ◽  
Author(s):  
Eugenio Pozzati ◽  
Francesco Tognetti ◽  
Michele Cavallo ◽  
Nicola Acciarri

OBJECTIVE Posterior vault distraction osteogenesis (PVDO) is an effective tool to increase intracranial volume and expand the posterior cranial fossa. During PVDO, the authors extended osteotomy posterior to the foramen magnum to fully expand the posterior cranial fossa. The aim of this study was to investigate the efficacy of complete PVDO in posterior fossa expansion and treatment of Chiari malformation type I (CM-I) in patients with craniosynostosis. METHODS Patients with craniosynostosis who had undergone complete PVDO between January 2012 and May 2020 were reviewed retrospectively. A coronal osteotomy extending to the foramen magnum was performed and the foramen magnum was decompressed by removing its posterior rim with a 1-mm Kerrison rongeur. Four distractor devices were placed and the vector of distraction was controlled from the posterior to the inferior-posterior direction, depending on the deformity. Changes in the intracranial volume, posterior cranial fossa area, and cerebellar tonsillar descent were measured after complete PVDO by using CT and MRI. RESULTS A total of 11 patients with craniosynostosis and concurrent CM-I were included in the study. The mean age was 34.6 ± 24.0 months (continuous variables are expressed as the mean ± SD throughout). One patient had sleep apnea, which was consistent with CM-I, and another patient had a headache, which was nonspecific. The intracranial volume increased from 1179.6 ± 180.2 cm3 to 1440.6 ± 251.5 cm3 (p = 0.003; 24.5% increase compared to the preoperative volume). The posterior skull base area increased from 44.9 ± 19.3 cm2 to 72.7 ± 18.1 cm2 (p = 0.004). Cerebellar tonsillar descent decreased in all 11 patients after complete PVDO (preoperative: 10.8 ± 3.7 mm, postoperative: 2.7 ± 3.0 mm; p = 0.003). Among the 11 patients, 5 showed complete resolution of cerebellar tonsillar herniation. CONCLUSIONS Complete PVDO can more efficiently expand the posterior cranial fossa, unlike conventional methods. Moreover, it helps to relieve cerebellar tonsillar herniation. Complete PVDO is a powerful tool to increase the intracranial and posterior fossa volumes in patients with craniosynostosis and concurrent CM-I.


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