Pearls & Oy-sters: Anorexia and emaciation in patients with cerebellar hemangioblastoma.

Pearls & Oy-sters: a rare case of neurotrichinosis with MRI.

The neurologic manifestations of trichinosis are diverse, and range from encephalopathy to cerebral, cerebellar, and spinal cord abnormalities.

Pearls & Oy-sters: Positional vertigo and vertical nystagmus in medulloblastoma: A picture is worth a thousand words.

Pearls c Eye movement abnormalities can be helpful with topical localization. c Vertical nystagmus (downbeat and upbeat nystagmus) is typically caused by posterior fossa lesions. Other causes include medication side effects, vitamin deficiencies, inflammatory and autoimmune/paraneoplastic conditions, and hereditary and degenerative cerebellar ataxias. c Lesions in the posterior fossa such as me...

Pearls & oy-sters: cerebral venous air embolism after central catheter removal: too much air can kill.

Pearls & Oy-sters: cough headache secondary to Chiari malformation type I.

Pearls & oy-sters: oval pupil: two observations.

The presence of an oval pupil usually localizes the neurologic problem to the midbrain.