BACKGROUND AND PURPOSE In young adults, hematopoietic bone marrow has usually converted to fatty marrow. Fat hyperintensity on T1-weighted MR images facilitates the evaluation of marrow abnormalities. Our purpose was to compare cranial marrow signal intensity patterns in adults with systemic disorders and in healthy subjects. METHODS MR images in 25 adults with underlying systemic disorders (...

Vertebrobasilar junction entrapment due to a clivus fracture is a rare clinical observation. The present case report describes a 54-yr-old man who sustained a major craniofacial injury. The patient displayed a stuporous mental state (Glasgow Coma Scale [GCS]=8) and left hemiparesis (Grade 3). The initial computed tomography (CT) scan revealed a right subdural hemorrhage in the frontotemporal re...

EDUCATIONAL OBJECTIVE At the conclusion of this presentation, the participants should be able to recognize seeding as a form of treatment failure in transseptal resection of clival chordomas. OBJECTIVES The purpose is to present a case of implanted metastases in the nasal septum after a transseptal approach for resection of clival chordoma and to compare it with other reported cases in the li...

Cases of cerebrospinal fluid (CSF) rhinorrhea due to clival fracture are rare. We present a case of bacterial meningitis with CSF rhinorrhea after a clival fracture. Heavily T2-weighted images showed a bone flap in the thinned clivus and fluid collection in the sphenoid sinus. CSF rhinorrhea developed at 1 month after mild trauma. The fracture may have been caused by the trauma and/or by the pr...

Clivus is a rare location for metastasis. We report patient with lung cancer presented to us diplopia and headache. He was found have clival metastasis treated palliative radiation therapy clivus. Metastasis also differential be considered when patients present lesion.

The authors present a case of a 29-year-old man who developed rapidly progressive cranial nerve palsies and a right hemiparesis secondary to a pontine hemorrhage. The rare but correct diagnosis of a clival chordoma which had invaded the brain stem and subsequently hemorrhaged was based on computed tomography and magnetic resonance imaging. The diagnosis was confirmed at surgery when the patient...

A 49-year-old man with 10 years of intranasal cocaine use presented with dysphagia. Neurologic examination demonstrated bilateral sixth nerve palsies. Brain MRI showed erosion of the sphenoid sinus walls and a defect in the skull base; the resulting path between the nasal cavity and brainstem permitted rhomboencephalitis and clival osteomyelitis (figure 1). Clival cultures grew methicillin-resi...

Because of the location, skull-base chordomas often present with headaches and diplopia and sixth and fifth nerve palsies are the most common neurological signs.[1,2] The interval between onset of symptoms and diagnosis of clival chordoma is quite variable, 2.5-4.4 years.[4] The uncommon clinical presentations include: Nasal obstruction, nasal bleeding, and subarachnoid hemorrhage.[3,5] Spontan...

BACKGROUND AND PURPOSE Escalation in monocyte trafficking from the bone marrow into the brain may play a critical role in central nervous system injury and cognitive deterioration in patients with HIV infection. This study tested the hypothesis that the mean diffusivity is sensitive to marrow changes in HIV patients and that these quantitative imaging measurements correlate with the severity of...