Extreme de novo appearance of cerebral cavernous malformations: case report.

Objective: Cerebral cavernous malformations (CCMs) are found in 0.1 to 0.5% of the population.

Endogenous growth inhibition of angiogenesis in brain tumors.

The growth inhibition of remote metastases by a primary tumor is known as endogenous growth inhibition leading to tumor dormancy. Such a phenotype has not been described in primary malignant gliomas. However, although glioma cells have frequently spread to other parts of the brain at the time of diagnosis, formation of solid secondary tumors is uncommon.

Bladder calculus formation and urinary retention secondary to perforation of a normal bladder by a ventriculoperitoneal shunt.

Urinary retention due to bladder calculus formation is unusual in the pediatric population. This case report describes a rare sequence of events in which a bladder stone formed secondary to the erosion of a ventriculoperitoneal shunt through a normal bladder wall. A review of the literature is included.