略語大辞典 [Med] 9 OSP (L) occiput sinister posterior) (胎児の)後頭左側後位. 胎位.(L) occiput sinister posterior); or (L) OLP(occipito-laevus posterior); or LOP(left occipitoposterior) (position offetus); [Med]. 丸善「略語大辞典」JLogosID : 11881822