Case Report
Sirenomelia: A case report
Swagat Mahapatra1, Suruchi Ambasta2
1MS, Orthopedics, Senior Resident, Department of Orthopedics, JIPMER, Pondicherry, India.
2MD Anesthesiology, Senior Resident, Department of Anesthesiology and Critical Care, JIPMER, Pondicherry, India.


Address correspondence to:
Swagat Mahapatra
Old MSR Quarters No-21, Dhanawantary Nagar
JIPMER Campus, Puducherry
India - 605006
Phone: +918940482218

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How to cite this article
Mahapatra S, Ambasta S. Sirenomelia: A case report. Int J Case Rep Images 2014;5(9):638–641.

Introduction: Sirenomelia is a congenital structural anomaly characterized by abnormal development of the caudal region of the body with varying degrees of fusion of lower limbs. Most of the times, the condition is fatal for the baby. Most babies do not survive even after surgery. Fifty percent of cases are seen as stillbirths, and it is much more common in identical twins. This abnormality was initially confused with caudal regression syndrome, but later was given a new name, i.e., sirenomelia mermaid syndrome.
Case Report: We present a case of a 15-year-old boy with partially fused lower limbs. A provisional diagnosis of sirenomelia is made and detailed review and surgery was planned. The boy did not report for further treatment.
Conclusion: Very rare disorder with prevalence of 1 in 100,000 live births with a total of 300 cases reported till today in which nine are from India. The precise etiology of sirenomelia was not well understood. Many theories have been proposed but none of these is considered definitive. It is very important to diagnose this condition by ultrasonography so that termination of pregnancy can be carried out.

Keywords: Sirenomelia, Caudal regression syndrome, Deformity, Congenital structural anomaly, Fusion

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Author Contributions
Swagat Mahapatra – Substantial contributions to conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Suruchi Ambasta – Analysis and interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published
Guarantor of submission
The corresponding author is the guarantor of submission.
Source of support
Conflict of interest
Authors declare no conflict of interest.
© 2014 Swagat Mahapatra et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.