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Abnormal Skull
Published in Swati Goyal, Neuroradiology, 2020
Fracture in the pterion, the weakest point in the skull, can damage the middle meningeal artery, resulting in extradural hemorrhage. All the lesions involving the components mentioned above, the sellar, and the parasellar regions, are part of the CSB lesions.
Temporal Region and Lateral Brow
Published in Ali Pirayesh, Dario Bertossi, Izolda Heydenrych, Aesthetic Facial Anatomy Essentials for Injections, 2020
Krishan Mohan Kapoor, Alberto Marchetti, Hervé Raspaldo, Shino Bay Aguilera, Natalia Manturova, Dario Bertossi
The pterion is the H-shaped formation marking the union of four cranial bones: Greater wing of the sphenoid boneSquamous portion of the temporal boneFrontal boneParietal bone
Answers
Published in Andrew Schofield, Paul Schofield, The Complete SAQ Study Guide, 2019
Andrew Schofield, Paul Schofield
Extradural haematomas often result from a skull fracture leading to a laceration to the middle meningeal artery. The pterion is relevant as the anterior division of the middle meningeal artery runs underneath it. The bleed into the fixed space causes a rise in intracranial pressure, with subsequent midline shift and herniation. Ultimately, evacuation and ligation of the bleeding vessel is needed.
Keyhole approaches for surgical treatment of intracranial aneurysms: a short review
Published in Neurological Research, 2019
Jonathan Rychen, Davide Croci, Michel Roethlisberger, Erez Nossek, Matthew B. Potts, Ivan Radovanovic, Howard A. Riina, Luigi Mariani, Raphael Guzman, Daniel W. Zumofen
Alike the classic pterional craniotomy, the pterion-centered bony opening that can be achieved with the minipterional approach supports a trans-Sylvian working corridor, and provides a rather straight surgical trajectory along the sphenoid ridge (Figure 1(a)). Correspondingly, Kang et al. [23] and Jägersberg et al. [24] found that this approach enables optimal surgical maneuverability for the two most frequently reported aneurysms locations that were the MCA-bifurcation and the origin of the PCoA (Figure 3(a)). It has been stated that this approach ‘represents an optimal balance among the size of craniotomy, extent of dissection of the temporalis muscle, splitting of the Sylvain fissure, and microsurgical exposure’; [5,25] and correspondingly we found a raising number of publications concerning its use in vascular neurosurgery (Supplementary Data Table 6).
Utility of calcium phosphate cement cranioplasty following supraorbital approach for tumor resection
Published in International Journal of Neuroscience, 2018
Rafey A. Feroze, Nitin Agarwal, Raymond F. Sekula
A pericranial flap was not raised. In all cases, the superior portion of the temporalis fascia and muscle was reflected enough to expose the pterion. A small craniostomy below the superior temporal line at the keyhole point was made. A craniotomy flap measuring 3 × 2 cm was made with the supraorbital notch and supraorbital branch of the trigeminal nerve as the medial limit and the frontal sinus as the lateral extent. The orbital rim was not removed in any patient. In an effort to create more working room, however, the anterior cranial base was thinned with a 4 mm coarse diamond drill bit to the level of the meningoorbital band.
Chordoid meningioma: report of 5 cases and review of the literature
Published in British Journal of Neurosurgery, 2023
Alican Tahta, Berkhan Genc, Asli Cakir, Zeki Sekerci
Five patients were included in the study (Figure 1). There were three females. Mean age was 54 (range 43–67 years) for patients with CM. Mean age of all patients with meningioma was 54. Lesions were classified according to their location and extension. All of the tumors were supratentorial. There were two tuberculum sella, one frontal convexity, one of the internal third of the sphenoid wing (pterion), and one parasagittal (Table 2). Three patients presented with headache (60%), two with visual loss (40%), one with local swelling (20%), one with seizure and vertigo (20%). Mean tumor diameter was 34.5 mm (range 33–35).