<prompt> In asymmetrical IUGR which organ is not affectedSubcutaneous fatMuscleLiverBrain  <response>: IUGR is classified as1 Symmetric IUGRReduced growth is an asymmetric head circumference, length and weight equally affected.Has earlier onset.Is associated with diseases that seriously affect fetal cell number, such as conditions with chromosomal, genetic malformation, teratogenic, infectious or severe maternal hypertensive etiologies.2 Asymmetric IUGRReduced growth is asymmetric with relative sparing of head growth.Has late onset.Is associated with poor maternal nutrition or with late onsetexacerbation of maternal vascular disease preeclampsia, chronic hypertension. 