略語大辞典 [Med] 7 OST occiput sinister transversus (胎児の)後頭左側横位. 胎位.occiput sinister transversus; or (L) OLT(occipito-laeva transversa); or LOT(left occipitotransverse) (position ofthe fetus); [Med]. 丸善「略語大辞典」JLogosID : 11881835