Relationship of transcranial Doppler flow velocities and arteriovenous malformation feeding artery pressures.

Background And Purpose: Feeding mean arterial pressure immediately proximal to the nidus of arteriovenous malformations may influence the frequency of spontaneous intracerebral hemorrhage. This study assessed the usefulness of transcranial Doppler ultrasound velocities as a noninvasive estimate of feeding mean arterial pressure.

Methods: We studied 41 patients undergoing 73 staged treatments of arteriovenous malformations with endovascular embolization, surgery, or both.

Bilateral middle cerebral artery occlusions in neurocysticercosis.

Background: Bilateral hemispheric strokes in a young adult are very rare. We describe a case of neurocysticercosis in a young male with bilateral middle cerebral artery occlusions.

Case Description: Axial tomographic imaging revealed lesions compatible with cysticerci adjacent to each middle cerebral artery initial segment, and occlusion of both arteries at that level was demonstrated by angiography.

Renal parenchymal neurilemoma: a rare and unusual kidney tumor.

We report a case of a neurilemoma arising from the renal parenchyma. Renal neurilemoma is an extremely rare tumor, with only 5 cases previously reported. Because so little is known of its natural history and potential for malignancy we recommend radical nephrectomy as the treatment of choice.

MR imaging of enucleated human eyes at 1.4 tesla.

Proton magnetic resonance images obtained for nine human eyes with various pathology were correlated with histological findings. One eye with retinal gliosis, three eyes with malignant melanoma, one eye with extraocular squamous cell carcinoma, one pair of eyes with incipient senile cataracts, and one pair of eyes with diabetic cataracts were examined at a field strength of 1.4 T using spin-echo and inversion-recovery signal acquisition protocols.