system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Ultrasound scanning of a fetus shows asymmetric growth retardation. It may be associated with the following pathology:
assistant
The correct answer is  Asymmetric intrauterine growth retardation (IUGR) is seen in chronic placental insufficiency due to inadequate substrate transfer. The fetus is affected in later months during the phase of cellular hyperophy. The placental pathology includes, Placenta prae Abruption Circumvallate Infarction Mosaicism Poor placentation Symmetric IUGR is seen in genetic disease or infection. The fetus is affected from the noxious effect very early in the phase of cellular hyperplasia. Ref: Textbook of Obstetrics by DC Dutta, 6th edition, Page 463-464.