Children with central venous access devices have an increased risk of bacterial infections, whether or not they are neutropenic. If your child has received chemotherapy, his hair will grow back. If your child has received radiation, the area in the field of radiation usually does not grow hair. If hair does grow back in the field of radiation, it is almost always very thin. After a stem cell transplant some children do not re-grow their hair.
Cancer is a clonal abnormality.
This means that, for various reasons, the regulation of growth of a single cell may become abnormal and cause many abnormal cells to grow. This can occur anywhere in the body. In general, cancer does not run in families but siblings do have a slightly increased risk of malignancy. This is a commonly asked question and the answer is usually no. In certain cases there may be a familial tendency to develop certain types of cancers, but most cancers in children do not fall in this category.