anomaliescan

Anomaliescan is a prenatal ultrasound examination designed to assess fetal anatomy and detect structural abnormalities during pregnancy. It is typically performed in the second trimester, commonly between 18 and 22 weeks of gestation, with many guidelines aiming for around the 20-week mark. The scan evaluates fetal organs and systems, including the brain and spine, heart, abdomen, limbs, facial features, placenta position, and amniotic fluid volume. It serves as a screening tool to identify potential congenital anomalies and to assess overall fetal development and well-being.

The procedure uses ultrasound, usually via a transabdominal probe, though transvaginal imaging may be employed if necessary. The examination is non-invasive, painless, and generally well tolerated. Findings are communicated to the pregnant person, and if an anomaly is suspected, additional testing may be offered. Such follow-up can include targeted ultrasound, fetal echocardiography for detailed heart assessment, and genetic testing options (for example, microarray or karyotype) or amniocentesis, depending on the suspected condition and parental preferences.

Limitations of an anomaliescan include the possibility of nondetectable conditions, false positives, or false negatives, and the quality of results can depend on factors such as fetal position and examiner experience. A normal anomaliescan does not guarantee the absence of all anomalies, while an abnormal result may lead to further diagnostic steps and counseling.

In clinical practice, anomaliescan informs pregnancy management planning, delivery arrangements, and neonatal care planning. It is influenced by regional guidelines, resource availability, and informed consent practices.