<s>[INST] Dear Doctor, I m pregnant in 28 gwk. I had Ultra Sound (US) scan and they report the my baby have Left Ventricle Brain Prominent = 0.76 cm and his head circumference = 25.7 cm. I m worry if my baby will has any problem (e.g. Hydrocephelus). What s your opinion? Thanx in advanced.. [/INST] Hi, Chat Doctor.  I welcome you to Chat Doctor VIRTUAL CLINIC. I have gone through your question, and I think I have understood your concern. Furthermore, I will suggest you the best possible treatment options. 1) First do not worry. 2) A single scan report is not conclusive, repeat the scan after 4 weeks.  Also, it is important to know pressure effect of enlarged ventricle on the brain. This is cerebra ventricular ratio. If it is not growing in size and there is no pressure on brain, then you need not worry. 3) it will be helpful to consult with fetal medicine expert in your treating hospital.  There are many solutions even if the babies ventricles have problems.  The problem can be tackled by neurology experts. I hope this answer helps you. Thanks  </s>