Medulloblastomas arise from immature, undifferentiated cells in the cerebellum. Histologically, a characteristic appearance is that of cells with round or elongated shapes that frequently form rosettes and (around blood vessels) pseudorosettes.

About 20% of pediatric brain tumors are medulloblastomas that in two thirds of cases arise during the first 15 years of life. The younger the child, the greater the aggressiveness of growth expected. There is a very high rate of local metastasis via the cerebrospinal fluid in the subarachnoid space, and a high rate of extraneural metastasis (30%). Sixty-five percent of cases are male, and in 90% of cases, the tumors arise in the posterior cranial fossa, most commonly in the cerebellar vermis.

Supplements For Diabetics

Supplements For Diabetics

All you need is a proper diet of fresh fruits and vegetables and get plenty of exercise and you'll be fine. Ever heard those words from your doctor? If that's all heshe recommends then you're missing out an important ingredient for health that he's not telling you. Fact is that you can adhere to the strictest diet, watch everything you eat and get the exercise of amarathon runner and still come down with diabetic complications. Diet, exercise and standard drug treatments simply aren't enough to help keep your diabetes under control.

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