These ultrasound images show the sagittal section of the uterus in - TopicsExpress



          

These ultrasound images show the sagittal section of the uterus in a 4 week, 6 days old pregnancy. The double decidual sac sign is clearly present, showing a normal early intrauterine pregnancy. This sign helps differentiate a normal intrauterine pregnancy in its early stages from the pseudosac of ectopic pregnancy. The double decidual sign consists of the decidua parietalis surrounding the decidua capsularis with the gestation sac encased within the Decidua capsularis. The decidua capsularis is separated from the decidua parietalis by a small amount of fluid within the endometrial cavity. The decidua parietalis lines the uterine cavity whilst the decidua capsularis encases the gesation sac. The decidua capsularis and decidua parietalis join or attached at the decidua basalis. (FL= fluid in endometrial cavity; SAC= GESTATION SAC). The double decidual sac sign is so named because of the sonographic appearance of 2 concentric rings around the gestation sac; this is a normal finding in early pregnancy
Posted on: Mon, 12 Aug 2013 20:26:27 +0000

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