'A stroke of luck': a case report of a right-sided cerebellar cerebrovascular accident in a young man.

A 27-year-old man with a history of migraines, epilepsy and pulmonary stenosis presented to the emergency department with symptoms of vomiting, headache, visual disturbance and problems with balance. The team considered the possibility of intracranial pathology and an urgent CT head with contrast showed what appeared to be a large posterior fossa mass with an appearance suggestive of a primary haemangioblastoma, which was causing considerable mass effect. The patient had neurosurgery to relieve the obstruction and a biopsy of the area showed the mass to be an ischaemic infarct rather than a tumour.

In vitro antibacterial effect of carbamide peroxide on oral biofilm.

This study compared the effects of carbamide peroxide (CP) and chlorhexidine (CHX) on oral biofilm in vitro. Collagen-coated hydroxyapatite discs were inoculated with subgingival plaque. After 3 weeks, the emergent biofilms were subjected to 1-, 3-, and 10-min exposures of a 1% CHX gel, a 5% CP gel and rinse, and a 10% CP gel and rinse.

Bone formation on rough, but not polished, subcutaneously implanted Ti surfaces is preceded by macrophage accumulation.

Implanted rough surfaces have long been associated with the accumulation of macrophages and other cells of the monocytic lineage such as foreign body giant cells and osteoclasts. As cells of the moncytic lineage are part of the immune system, the response of this cell family to biomaterials has attracted wide concern. This study compared events at the interface of implant surface topographies with varied roughness in a rat subcutaneous model.