«Mermaid syndrome»: Two clinical cases and a literature review
https://doi.org/10.25789/YMJ.2026.93.31
Abstract
This study synthesizes data from current literature with a retrospective analysis of two clinical cases of sirenomelia and establishes the regional incidence of the condition within the Kurgan Region, Russia. In both cases, the lower limb fusion was accompanied by lethal visceral anomalies. The reported cases were identified via first-trimester combined prenatal screening utilizing ultrasound imaging, highlighting the critical utility of this method in the diagnosis of sirenomelia. Notably, cytogenetic analysis revealed a normal karyotype in both instances. Consequently, this study reinforces the consensus that early, expert-level sonographic assessment constitutes the definitive clinical strategy for the identification of complex, lethal fetal anomalies, thereby facilitating timely decision-making regarding pregnancy management.
About the Authors
E. V. Knysh
ГБУ «Курганский областной перинатальный центр»
Russian Federation
Russian Federation
O. E. Knysh
ФГБОУ ВО «Уральский государственный медицинский университет»
Russian Federation
Russian Federation
E. V. Kudryavtseva
ФГБУ «Уральский научно-исследовательский институт охраны материнства и младенчества»
Russian Federation
Russian Federation
V. V. Kovalev
ФГБОУ ВО «Уральский государственный медицинский университет»
Russian Federation
Russian Federation
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Review
For citations:
Knysh E.V., Knysh O.E., Kudryavtseva E.V., Kovalev V.V. «Mermaid syndrome»: Two clinical cases and a literature review. Yakut Medical Journal. 2026;(1):144-148. (In Russ.) https://doi.org/10.25789/YMJ.2026.93.31
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