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Sirenomelia apus with vestigial tail.
Tushar B Parikh1, Ruchi N Nanavati, Rekha H Udani
1Department of Neonatology, Seth GS Medical College & King Edward Memorial Hospital, Parel, Mumbai, India. tbparikh@rediffmail.com
Indian Journal of Pediatrics
|May 7, 2005
Summary
Sirenomelia, a rare congenital fusion of lower limbs, was observed in a newborn with unusual features. This case highlights a rare association of a vestigial tail with sirenomelia, not previously documented in medical literature.
Area of Science:
- Medical Genetics
- Developmental Biology
- Pediatric Surgery
Background:
- Sirenomelia is a rare congenital anomaly characterized by fusion of the lower extremities.
- It is associated with significant morbidity and mortality due to complex malformations.
- Understanding its spectrum is crucial for diagnosis and management.
Observation:
- A newborn presented with complete lower limb fusion, absent fibula, and anal atresia.
- The infant also exhibited a complete absence of the urogenital system and a single umbilical artery.
- Notably, a vestigial tail was observed, an association not previously reported with sirenomelia.
Findings:
- This case details a unique presentation of sirenomelia with a vestigial tail.
- The constellation of anomalies includes severe limb fusion, renal agenesis, and absent genitalia.
- The presence of a single umbilical artery is consistent with known sirenomelia associations.
Implications:
- This report expands the known phenotypic spectrum of sirenomelia.
- It suggests potential novel genetic or developmental pathways involved in sirenomelia.
- Further research into rare sirenomelia associations may improve understanding of limb and organogenesis.