A craniectomy is a surgical procedure that involves removing a portion of the skull to access the brain. This operation is often performed to relieve pressure caused by swelling, bleeding, or tumors. By creating space, doctors can prevent further damage to the brain and improve patient outcomes. After the procedure, the removed section of the skull may be stored for later reattachment or replaced with a synthetic material. Recovery can vary, and patients may require rehabilitation to regain function. Craniectomy is typically performed by a neurosurgeon in a hospital setting.