Childhood cerebellopontine angle teratoma associated with congenital hydrocephalus.

A case of childhood teratoma in the cerebellopontine angle associated with shunted congenital hydrocephalus is presented. The need for detailed computed axial scanning with and without contrast in congenital hydrocephalus not associated with intraventricular hemorrhage or myelodysplasia is emphasized.

Symptomatic Rathke's cleft cyst with pituitary adenoma: case report.

A rare case of a pituitary adenoma found in association with a symptomatic Rathke's cleft cyst in a 34-year-old women presenting with headaches, visual symptoms, and amenorrhea is described. The diagnostic evaluation and operative treatment of these coincident lesions are discussed.

Morphology of cerebral endothelium and astrocytes as determinants of the neuronal microenvironment.

The morphological features of the blood-brain barrier to macro-molecules under normal and perturbed conditions are reviewed in the context of some recent investigations. The electric charge on molecules of horseradish peroxidase (HRP) affect its pinocytosis and intracellular fate which pertains to problems of distinguishing endocytosis from vesicular transport across endothelium. When the barrier is opened, the number of pits, vesicles and tubules increases.