Pineal gland surgery, in some cases, may also have certain sequelae. The most common sequelae are hydrocephalus. The most common sequelae are hydrocephalus, which may be accompanied by bleeding during the removal process, blocking the normal circulation of cerebrospinal fluid, resulting in acute hydrocephalus and the need for reoperation. Intracranial infections, intracranial surgeries often require the placement of drains, and they are open, invasive operations, which can easily lead to intracranial infections and damage to the nerves and blood vessels, especially to the internal cerebral veins and large cerebral veins, which can cause the patient to be silent, that is, not to speak. In other cases, the damage is caused by pulling on the occipital lobe, resulting in the formation of isotropic hemianopia. Others may cause epilepsy due to the different tissues removed, so it is important to be aware of the corresponding complications.