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Anomaly (Detailed) Ultrasound 18-22 Weeks

It is the most comprehensive ultrasound examination aimed at detecting fetal structural anomalies.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Kadın Hastalıkları ve Doğum department. Book Appointment →

What is Anomaly (Detailed) Ultrasound 18-22 Weeks?

The detailed (Level II) ultrasound is an examination performed by a perinatology-trained physician that systematically evaluates all of the fetus's organ systems (CNS, heart, lungs, GI, GU, skeleton). It typically lasts 30-45 minutes.

This examination can detect structural disorders such as central nervous system anomalies, cardiac defects, cleft lip-palate, renal anomalies, and skeletal dysplasias at a rate of 70-95%. Additionally, the amniotic fluid, placenta, and cord are also evaluated.

If a suspicious finding is detected during the examination, fetal echocardiography, fetal MRI, or amniocentesis may be recommended. Early diagnosis is critical for the delivery plan and organization of neonatal care.

Symptoms

Fetal cardiac defects (VSD, AVSD, tetralogy of Fallot)
CNS anomalies (ventriculomegaly, spina bifida)
GI anomalies (gastroschisis, omphalocele)
Renal anomalies (hydronephrosis, renal agenesis)
Skeletal dysplasias and limb defects
Soft markers: echogenic bowel, nuchal fold

Risk Factors

Advanced maternal age
Family history of congenital malformation
High risk on first-trimester screening
Maternal disease such as diabetes or epilepsy
Use of teratogenic drugs
IVF pregnancy

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • For the planned anomaly screening between weeks 18-22
  • To the perinatology council when an abnormal finding is detected
  • If fetal echocardiography is needed (suspected cardiac anomaly)
  • When low placenta or placenta previa is detected
  • For fetal growth restriction or fluid abnormality

Treatment Methods

01
Detailed second-trimester ultrasound (Level II)
02
Fetal echocardiography (if cardiologic suspicion)
03
Fetal MRI (for CNS anomalies)
04
Genetic counseling and amniocentesis
05
Fetal medicine council (multidisciplinary)
06
Delivery plan and pediatric surgery consultation

Which Department to Visit?

You can visit our Kadın Hastalıkları ve Doğum department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Kadın Hastalıkları ve Doğum Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.