Question
Twenty days after the infusion, the CT imaging shows: bilateral frontal sulcus widening, slightly expanded fissures, slightly enlarged ventricular system, no obvious abnormal density areas in the brain parenchyma on all slices, midline structures centered. Currently, my daughter Dou Dou is showing normal performance in all aspects, she is energetic and has a good appetite. Is this hydrocephalus? At 6 months old, she should be able to sit independently, which should be fine. There is no need for treatment at this time; just observe. Compare with the growth and development of children of the same age. There is a lot of information online. Subdural effusion is usually unilateral. If it is bilateral, it is asymmetric. The low-density area inside the skull plate is crescent-shaped. The adjacent brain surface is compressed and shifted inward, flattened. The sulci become shallow. There is a displacement effect. Since the arachnoid membrane is located inside the dura mater, when the subarachnoid space widens, it gets closer to the inner side of the skull plate. Enhanced scanning can show its internal reinforced dot-like vascular shadows (veins) adjacent to the skull plate. While in subdural effusion, as the arachnoid membrane shifts inward, the vascular shadows are farther from the skull plate.
Answer
A 6-month-old baby being able to sit independently should be considered normal. Currently, there is no need for treatment; just observe. These observations should be compared with the growth and development of children of the same age. There is a wealth of information available online. Subdural effusion is typically unilateral. If bilateral, it would be asymmetric. The low-density area inside the skull plate takes on a crescent shape. The adjacent brain surface is compressed inward and flattened. The sulci become shallower, indicating a displacement effect. As the arachnoid membrane is inside the dura mater, when the subarachnoid space widens, it gets closer to the inner side of the skull plate. Enhanced scanning can reveal its internal reinforced dot-like vascular shadows (veins) adjacent to the skull plate. Conversely, in subdural effusion, as the arachnoid membrane shifts inward, the vascular shadows are farther from the skull plate.