<prompt> True statement about symmetrical lUGR with respect to asymmetrical lUGR :Worse prognosisLate onsetBrain sparing effectMore common  <response>: Intrauterine growth retardation refers to those fetuses that have failed to achieve their own genetic growth potential. Features of symmetrical IUGR: Uniformly small Ponderal indexBih weightCrown heel length -Normal HC:AC and FL:AC Ratios-Normal Etiology: Genetic disease or Infection,Early onset Severe HTN Intrinsic to fetus. Early onset. All organs equally affected HCAC and FLAC normal Poor neonatal prognosis Features of Asymemetrical IUGR Head larger than Abdomen Ponderal Index-Low HCAC and FLAC ratios- Elevated Chronic placental insufficiency Extrinsic to fetus Late onset Usually uncomplicated having Good prognosis. REF: DC DUTTAS TEXT BOOK OF OBS, 9th edition,page 432 