Optic nerve thickening and infarction as the first evidence of orbital involvement with mucormycosis

We report a 53-year-old female with uncontrolled diabetes mellitus who presented with decreased vision in the right eye for a few hours duration. Orbital computed tomography and magnetic resonance imaging were performed at presentation and showed a thickening and infarction of the right optic nerve with no other orbital abnormalities. A few days later, the patient developed necrosis in the region of the right medial canthus and nasal mucosa. Tissue biopsy confirmed the diagnosis of mucormycosis

Fluid-fluid level in Langerhans cell histiocytosis of the skull

We present a case of solitary eosinophilic granuloma in the skull of a 6-year-old Saudi boy. This osteolytic lesion has fluid-fluid level on CT and MRI. We are presenting a rare radiological finding of eosinophilic granuloma

Role of diffusion-weighted MRI in neuro-behcet disease

We report the findings on serial diffusion-weighted MRI in a 29-year-old male with neuro-Beh‡et's disease. Initial T2-weighted and fluid-attenuated inversion recovery images showed a hyperintense lesion in the brain stem. The lesion showed slight hyperintensity on diffusion-weighted images with no evidence of diffusion restriction on apparent diffusion coefficient maps. A follow up study after 7 months showed complete resolution of the brain stem lesion. Our findings indicate that diffusion-weighted imaging is a useful tool to differentiate acute exacerbation of neuro-Behcet's disease from acute infarction, and therefore it helps in selecting the appropriate therapy

Radiological management of cerebrospinal fluid rhinorrhea

Cerebrospinal fluid [CSF] rhinorrhea results in high morbidity and mortality if left untreated. Surgical intervention is recommended in such cases; however, success is dependent on correct diagnosis and precise localization of leak site. Imaging plays a very essential and indispensable role. Imaging also plays a very important role in identifying the cause of leak and planning surgery. The radiological investigations used in evaluation of CSF rhinorrhea evolved over time from simple tests to very sophisticated and highly accurate procedures. Correct diagnosis and localization of leak depends on proper selection and adequate technique of radiological examinations. Sound knowledge in the current radiological investigations for CSF rhinorrhea, including the yield, indications, contraindications, complications, and selection, is essential for both treating physician and radiologist