What Are the Causes of Brain Atrophy in Child?

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Cerebral atrophy, or brain atrophy, describes a loss of brain cells and damage to the connections between them, or “shrinkage” of brain tissue. Cerebral atrophy is commonly associated with many diseases that affect the brain, notes the National Institute of Neurological Disorders and Stroke, or NINDS. In general, brain atrophy can be caused by disease like cerebral palsy, stroke, dementia, multiple sclerosis, Huntington’s disease or AIDS. Were any of those conditions to strike a child, brain atrophy could also result. However, there are some other, lesser-known causes of cerebral atrophy in children.

Systemic Chemotherapy

Dr. Prassopoulos, a radiologist, and his colleagues at the University Hospital in Heraklion, Greece took CT scans of 69 children receiving systemic chemotherapy and measured their brains before, during and after chemotherapy treatment. They note that half of the children were found to have brain atrophy, which was still visible long after treatment was completed. Dr. Prassopoulous’ findings were reported in the Journal of Medical and Pediatric Oncology.

Depressed Parents or Grandparents

In 2009, Dr. Peterson, a researcher in the department of child psychology at Columbia University, and colleagues reported that children who have a familial risk for depression, meaning a parent or grandparent with a history of depression, showed brain atrophy when compared to no-at-risk children. The cerebral atrophy in this study was only in the right hemisphere of the brain. When interviewed by the New York Times, Dr. Peterson explained that this region of the brain is responsible for the processing of emotional information and postulates that the brain atrophy observed may predispose these children to developing anxiety and depression themselves. Dr. Peterson’s findings were reported in the Proceedings of the National Academy of Science.

Neuronal Ceroid Lipofuscinoses

Neuronal ceroid lipofuscinoses, or NCLs, make up a diverse group of inherited neurodegenerative disorders. One disease, called Battens disease, is usually fatal by the early 20s and usually manifests during childhood, notes the Battens Disease Support and Research Association, or BDSRA. Symptoms of Battens disease are linked to a buildup of substances called lipopigments in the body's tissues. Lipopigments are made up of fats and proteins. Neuron death and brain atrophy occur in Battens disease. Early signs of the disease include changes to personality and behavior, slow learning, vision loss and clumsiness. In children this disease usually presents between the ages of 5 and 8 and progresses to moderate cerebral atrophy and dementia.

Cushing's Syndrome

Cushing’s syndrome is a rare hormonal disorder, especially rare in children, where the body is exposed to prolonged and high levels of the hormone cortisol, notes the National Endocrine and Metabolic Diseases Information Service, or NEMDIS. Dr. Merke, a research in the Pediatric and Reproductive Endocrinology branch of the National Institute of Health, and colleagues studied 11 children with Cushing's syndrome and compared them to 10 age- and sex-match healthy children. They found that the children with Cushing's syndrome had significantly smaller brain volumes but that there was a reversal of cerebral atrophy one year after surgical cure. Dr Merke reports these findings in Journal of Clinical Endocrinology and Metabolism and notes that although there is a rapid reversibility of the brain atrophy associated with the syndrome, significant decline in the cognitive function of these children remains one year after surgical cure.

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