The frontal sinuses of bovid mammals display a great deal of diversity, which has been attributed to both phylogenetic and functional influences. In-depth study of the hartebeest (Alcelaphus buselaphus), a large African antelope, reveals a number of previously undescribed details of frontal sinus morphology. In A. buselaphus, the frontal sinuses conform closely to the shape of the frontal bone,...

The upper airway (nasal passages, paranasal sinuses, pharynx, and glottis) provides the sentinel portion of human respiratory tract, with combined senses olfaction (cranial nerve I) trigeminal sensation V) signaling quality inspired air. Trigeminal function also complements sense taste (in turn mediated by cranial nerves VII, IX X), participates in genesis aversions. ability stimulation aero-di...

Background and Purpose Aneurysmal bone cysts (ABCs) rarely involve the cranium and have seldom been reported in pregnancy. Clinical Presentation We describe a case of a 28-year-old woman who presented at 37 weeks of gestation with 3 months of gradually worsening vision, 10 months of proptosis, and restricted ocular motility on the left. Brain imaging revealed a multicystic enhancing mass measur...

Disorders of the paranasal sinuses, particularly the sphenoid sinus, can be associated with significant disorders of the optic and other cranial nerves. We examined 100 consecutive routine CT scans, 100 posterior fossa CT scans, and 100 MR scans to look for evidence of sinus disease, especially of the sphenoid sinus. The sphenoid sinus was abnormal in 7% of scans by all methods. Other sinuses w...

It is important to define the dural sinuses during assessment of the clinical presentations in neurosurgery and neurology and especially before performing surgical interventions involving the brain. Variations of dural sinuses are frequently seen in confluence of the sinuses. In our case, cranial venous MRI angiography of a 49-year-old male patient demonstrated that the superior sagittal sinus ...

A S-year-old girl with history of unexplained cerebral palsy and cranial asymmetry presented with an acute encephalopathy and a cavernous sinus syndrome. Radiologic studies disclosed an arteriovenous malformation draining into a dilated vein of Galen, arterialization of flow into the cavernous sinuses from runoff of the malformation, and non-filling of the cavernous sinuses on orbital venograph...

Frontal sinuses in goats and other mammals have been hypothesized to function as shock absorbers, protecting the brain from blows during intraspecific combat. Furthermore, sinuses are thought to form through removal of ;structurally unnecessary' bone. These hypotheses were tested using finite element modeling. Three-dimensional models of domesticated goat (Capra hircus) skulls were constructed,...

We report a case of PCa (prostatic adenocarcinoma) with transdural metastasis which radiologically simulated a meningioma. During the course of the disease, the patient complained of progressive unilateral loss of vision as the first presentation of intracranial, extra-axial metastasis.