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Congenital Hernia of the umbilicus that is covered with a membrane: cord may be seen in the middle of the mass.
Congenital Absence of the brain ans cranial vault with the cerebral hemispheres missing or reduced to small masses
A nonlethal Genetic abnormality in which chromosomal makeup is 45 XO instead of the normal 46 XX or XY
Congenital fissure that remains open in the wall of the abdomen just to the right of the umbilical cord; bowel and other organs may protrude outside the abdomen from this opening
During the first trimester, the bowel normally herniates outside the abdominal cavity between 8 and 12 weeks.
A congenitally deformed fetus is which the brain substance protrudes through a fissure in the occiput so that the brain and spinal cord occupy a single cavity.
Fluid-filled structure, initially surrounding the neck; may extend upward to the head or laterally to the body.
Failure of forebrain to divide into cerebral hemispheres, which results in a single large ventricle with varying amounts of cerebral cortex that has been known to occur with trisomies 13 to 15 and trisomies 13 to 15 and trisomy 18.
A Physiologic cyst that develops within the ovary after ovulation and that secretes progesterone and prevents menses if fertilization occurs; may persist until 16th to 18th weeks of pregnancy.
Corpus Luteum Cyst
Decidual reaction that occurs within the uterus in a patient with an ectopic pregnancy
Conditon in which trophoblastic tissue overtakes the pregnancy and propgates throughout the uterine cavity
Gestational Trophoblastic Disease
The domiant structure seen within the embryonic cranium within the first trimester is that of the ______ which fills the lateral ventricles that it turn fill the cranial vault.
_______ of the cranial vault is not complete in the first trimester; the resulting false cranial border definition may give the rise to a faulse-negative diagnosis.
An abnormality that may be seen near the end if the first trimester when there is absence of cranium superior to the orbits with preservation of the base of the skull and facial features with the brain projected from the open cranial vault is _____
In________ the choriod plexus is shown to be "dangling" in the dilated dependent lateral ventricle
On sonogrpahy a large posterior fossa cyst that is continuous with the fourth ventricle, elevated tentorium,and dilation of the third and lateral ventricles may be seen in a fetus with_______.
One of the most common abnormalities seen sonographically in the first trimester is _______.
A potential Diagnostic pitfall for the sonographer is misinterpreting the hypoechoic or sonolucent embryonic skin surface in the region of the posterior neck. This has been described as the _________ sign and should not be confused with cystic hygroma, encephalocele,cervicle meningomyelocele, teratoma, or hemangioma
Sonographically, placental hematomas may be difficult to distinguish from____ hemorrhages.
By far the most coomon ovarian mass seen in the first trimester of pregancy is a(N)________ cyst.
What are associated risk factors for ectopic pregnancy
Previous pelvic Infectioins, IUCD, Fallopian Tube Surgery, Infertility Treatments, and previous Ectopic Pregnancy
The most important finding when scanning for ectopic pregnancy is to determine if there is a normal intrauterine gestation (thus ruling out the possibility of an ectopic pregnancy) or if the uterine cavity is _______ and adnexal ____ is present.
As many as 20% of patients with ectopic pegnancy demonstrate an intrauterine saclike structure known as the _______.
Cornual Pregnancy, or _____ is potentially the most life threatening of all ectopic gestations.
Embryonic cardiac rates of less than _____ beats per minute at any gestational age within the first trimester have been shown to be a poor prognostic finding
The most common occurence of bleeding in the first trimester is from _________ hemorraghe.
Characteristics for the sonographic diagnosis of _____ abortion consist of an empty uterus with no adnexal masses or free fluid and positive hCG levels.
Several sonographic findings may be shown with______ abortion, ranging from an intact gestational sac with a nonliving embryo to a collapsed gestational sac that is grossly misshapen
A proliferative disease of the trophoblast after a pregnancy is ______ disease.
In the above condition, the serum levels of beta-hCG are dramatically_______, often greater than 100,000 IU/mL.
The characteristics_________ appearance of hydatidiform mole, which includes a moderately echogenic soft tissue mass filling the uterine cavity and studded with small cystic spaces representing hydropic chorionic villi, may be seen on ultrasound.
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