at 20 weeks tiffa scan my sisters baby nasal bone is 4.2mm what does doctors suggest for this. else my NT scan was normal and tiffa was normal as well please suggest

A. Mam you’ll have to check with your doctor only on that they can tell you what is the situation as 4.2 MM seems okay to me but the doctors can give you exact guidance onto the current query that you have so you have to check with your doctor