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To evaluate the incidence of congenital fetal malformations by ultrasound in the 18–22 weeks’ scan. To describe the fetal anomalies detectedonantenatal Ultrasound studies were done when appropriate. The final outcome of the pregnancy was assessed. Among the 55 antenatal mothers with anomalous fetuses, 13 fetuses were classified as lethal. The single most common anomaly is Anencephaly. The most common organ system involved is Central Nervous System. most of the lethal anomalies are seen in central nervous system. Awareness about fetal karyotyping and fetal autopsy is very less among the patients and a positive step towardspaper highly desirable. Trimester anomaly scan should be offered to all the antenatal mothers between 18-22weeks and should be made an essential part ofthestandard antenatal care.