The conversation between human and AI assistant.
[|Human|] My daughter in law is 12 weeks pregnant, she had an ultrasound done which shows a large black area about the size of the baby s head, located in the lower abdomial area. Black spot is present on side images of the baby, however is not present on front views of the baby. She had an ultrasound approximately 2 weeks ago at which time this black area was not present. Her obstetrician is unfamiliar with these findings and has referred her to a specialist. Do you have any idea as to what this black area could be?
[|AI|]  Hello, This black spot present in the lower abdomen distended bladder, it is seen when the baby has a condition called megacystitis. It is usually seen after eleven weeks, and not at nine weeks as the bladder is seen on ultrasound at that time interval only., I would advise you to get an opinion of a fetal medicine specialist, and also get repeat sonography done by them. Fetal medicine experts will be better able to make you understand depending on the size of the bladder the options for treatment and follow up required. Hope I have answered your query. Let me know if I can assist you further. 
