The presence of widened lateral ventricles in a boy is a sign of hydrocephalus. Hydrocephalus can lead to widening of the ventricles, which may be related to congenital development, or may be caused by blockage of the arachnoid granules due to hypoxia or hemorrhage at birth. It may be related to congenital development, or it may be due to blockage of the arachnoid granules at birth due to hypoxia or hemorrhage. This may cause hydrocephalus due to obstruction of fluid flow and absorption. If there is a slight widening of the lateral ventricles, mild hydrocephalus can be observed and reviewed regularly. If the enlargement of the ventricles is persistent or very serious, then ventricular shunt surgery can be performed to drain the fluid to other parts of the brain, thus reducing the size of the ventricles and relieving the symptoms, as well as preventing the brain development from being affected by the compression of the brain tissue due to the widening of the ventricles. In addition to the above, it is important to have regular follow-ups because even after surgery, there is a risk of blockage and recurrence. Children’s height growth may also cause the drainage tube is not long enough, which will easily lead to recurrence, and after recurrence, the drainage tube should be replaced. The above is for reference only. Please refer to the doctor’s instructions for specific medication and treatment.