Journal
FETAL AND PEDIATRIC PATHOLOGY
Volume 41, Issue 1, Pages 37-48Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15513815.2020.1761915
Keywords
fetal skeletal dysplasias; ultrasound; Monogenic diseases; Pathology; Diagnosis
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This study evaluated the diagnostic accuracy of ultrasound, postmortem, and genetic studies in classifying skeletal dysplasias in the first and second trimesters of pregnancy. The results showed that ultrasound could only provide partial characterization in the first trimester, while complete characterization was possible in the second trimester. Pathology and genetics provided additional diagnostic yield in both trimesters.
Aim: We evaluated the diagnostic accuracy of ultrasound, postmortem and genetic studies in classifying skeletal dysplasias in the first vs second trimester of pregnancy. Methods: We retrospectively gathered data from a 15 year period of all the prenatal ultrasounds, autopsies, and available genetic studies on fetuses with skeletal dysplasias from our institution. Results: Five (23%) and 17 (77%) fetuses were diagnosed during the first and second trimester of pregnancy respectively. Only partial characterization was possible with ultrasound in the first trimester. Complete characterization was established in five cases (30%) in the second trimester with ultrasound alone. Pathology provided an additional diagnostic yield of 40% and 47% and genetics an additional 40% and 11% in the first and second trimesters respectively. Conclusion: Ultrasound is an effective screening but not a diagnostic tool. Complete characterizations of dysplasia increased from 22% by ultrasound alone to 86% with pathology and genetics.
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