The subcranial approach has emerged as a safe and effective procedure for resection of tumors of the anterior skull base. This approach allows excellent exposure of the nasal cavities, the paranasal sinuses, and the orbit 1 I also enables a wide approach to the anterior cranial fossa, while applying minimal retraction of the frontal lobes. Complications of this procedure are acceptable and comp...

A 37-year-old woman with a skull base infection sustained massive oropharyngeal bleeding after incisional nasopharyngeal biopsy and drainage of a prevertebral abscess. A pseudoaneurysm originating at the petrous portion of the internal carotid artery was initially misinterpreted on MR images as typical postoperative change within a resolving abscess cavity. Follow-up MR imaging and conventional...

Pneumocephalus is defined as a collection of air within the cranial cavity. It is a common finding following head injury with skull base fracture and neurosurgical procedures. Tension pneumocephalus is a rare complication. The diagnosis is clinical and radiological with the characteristic Mount Fuji sign seen on computed tomography (CT). It is a neurosurgical emergency, and early recognition an...

Spontaneous pneumocephalus following cerebrospinal fluid shunt is a rare complication. In most cases, the air enters in the intracranial cavity via a skull base defect. We report 2 cases of delayed tension pneumocephalus, secondary to ventriculoperitoneal shunt, and review the etiopathogenesis, prevention and treatment of this condition.

Antrochoanal polyp is an infrequent nasal mass and is uncommon in elderly people. The case is presented of a 65-year-old man who developed a giant antrochoanal polyp which blocked the right maxillary sinus, nasal cavity, nasopharynx, oropharynx and hypopharynx. Endoscopic removal of the polyp as well as the base of the polyp was performed.

Ectopic thyroid tissue may be observed anywhere from the tongue base to the lower neck. It is rarely seen in the mediastinum and abdominal cavity. Computed tomography and magnetic resonance imaging are very sensitive for detection and localization of ectopic thyroid tissue. This pictorial essay presents the radiological characteristics of developmental abnormalities and ectopia ...

This study revealed that the quantity of baeteria filtered from the base of Class V cavity restorations were directly related to the type of medicament used. Of the brands studied: composite, amalgam, sitieate, and guttapereha eaeh produeed varying numbers of bacterial eolonies, whereas zinc oxide and eugenol eement showed none. Histopathology of the pulps eorrelated direetly to the mierobiolog...

Di[dihydroxotin(IV)] Tröger's base bis-porphyrin 1, a host molecule with two internal and two external guest interaction sites, binds <or= 1 equivalent of dicarboxylic acid quantitatively within the chiral cavity, a regioselectivity amplified by initial ditopic H-bond formation, followed by kinetic trapping.

Spontaneous pneumocephalus following cerebrospinal fluid shunt is a rare complication. In most cases, the air enters in the intracranial cavity via a skull base defect. We report 2 cases of delayed tension pneumocephalus, secondary to ventriculoperitoneal shunt, and review the etiopathogenesis, prevention and treatment of this condition. © 2012 Sociedad Española de Neurocirugía. Published by El...

Abstract Regulations on global greenhouse gas emission are driving the development of more energy-efficient passenger vehicles. One key factors influencing energy consumption is aerodynamic drag where a large portion associated with base wake. Environmental conditions such as wind can increase separated flow. This paper investigates an optimised yaw-insensitive cavity square-back vehicle in ste...