This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'In asymmetrical IUGR which organ is not affected – \nSelect and explain. \nA. Subcutaneous fat, B. Muscle, C. Liver, D. Brain', 'role': 'user'}, {'content': 'Answer: D \nExplanation: IUGR is classified as\n1) Symmetric IUGR\n\nReduced growth is an asymmetric → head circumference, length and weight equally affected.\nHas earlier onset.\nIs associated with diseases that seriously affect fetal cell number, such as conditions with chromosomal, genetic malformation, teratogenic, infectious or severe maternal hypertensive etiologies.\n\n2) Asymmetric IUGR\n\nReduced growth is asymmetric with relative sparing of head growth.\nHas late onset.\nIs associated with poor maternal nutrition or with late onset/exacerbation of maternal vascular disease (preeclampsia, chronic hypertension).', 'role': 'assistant'}]