Characterization of fungus ball CT-hyperdensities within maxillary and sphenoid sinuses.

Objectives: CT-scan hyperdensities (HD) are described in more than 60% of all paranasal sinus fungus ball (FB) cases. Two types can be distinguished according to their density: calcium and metal types. We aimed to establish the prevalence and density of the HD observed in sphenoid and maxillary sinus FB and their relation to dental factors.

Predictive factors for multiple sclerosis in patients with clinically isolated spinal cord syndrome.

Objectives: To identify predictors of conversion to definite multiple sclerosis (MS) in patients with a cord clinically isolated syndrome.

Methods: The predictive values for conversion to MS of clinical, magnetic resonance imaging (MRI) and cerebrospinal fluid (CSF) variables in 114 patients with acute partial myelitis confirmed by a spinal cord lesion on MRI were studied. Other causes of cord syndromes were excluded.