10 Best Spine Surgeons in Guwahati

The CT scan showing a mass near your pineal gland could be a meningioma or a pineocytoma, two tumors that can have similar effects. Both of them may result in headaches and vision problems. A neurosurgeon can help run through the methods, and the main treatment can consist of surgery or other alternatives, as the specific type of tumor requires. 

The brain is protected by the skull, but there are no specific circular or ring-shaped bones associated with the limbic system and hypothalamus. These regions are part of the brain's structure and function independently within the skull's protection. And the brain's structure consists of various regions and structures that work together to regulate functions such as emotions, memory, and homeostasis, with the protection provided by the skull.

I cannot provide personalized medical advice or diagnose online. If you are concerned about your son's health and whether he needs shunt surgery, consult with a professional pediatrician or a neurosurgeon. Shunt surgery is recommended for individuals with hydrocephalus or other conditions that cause an abnormal accumulation of cerebrospinal fluid (CSF) in the brain, leading to increased pressure and damage to brain tissue.