Exercise,Lymphokines, Calories,and Cancer

In brief: Epidemiological studies suggest that exercise reduces the risk of cancer. The leading studies are reviewed here, along with the underlying animal research and the plausible protective mechanisms in humans. The conclusion, based on the literature, is that exercise may help defend against cancer by Preventing obesity, stimulating lymphokines, and/or facilitating other healthful changes in behavior. However, the data are largely preliminary and controversial. Thus, although there is reason to believe that exercise helps prevent cancer, much more research is needed to prove that it does. This article is the first in a series on internal medicine.     

A rare,pediatric, fourth-ventricular,anaplastic astrocytoma

Anaplastic astrocytoma, a diffusely infiltrating, malignant, astrocytic, primary brain tumor, is most commonly observed between 30 and 50 years of age. Anaplastic astrocytomas are now classified as WHO grade III lesions, with imaging characteristics and prognosis between diffuse low-grade astrocytomas (WHO grade II) and glioblastomas (WHO IV). Anaplastic astrocytoma can appear mostly in the cerebrum followed by cerebellum. However, it is rarely observed in the fourth ventricle. In this article, we aimed to describe an uncommon case of a pediatric, fourth-ventricular, anaplastic astrocytoma. A 9-year-old male who underwent MRI brain then adopted gross-total tumor eradication. The final histopathology findings were consistent with an anaplastic astrocytoma.