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APSP J Case Rep Vol. 1 (1) Jan-Jun, 2010                  

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LETTER TO THE EDITOR             APSP J Case Rep 2010; Vol. 1 (1)                           OPEN ACCESS



Overlapping Features of Caudal Regression Syndrome and VACTERL Complex in a Neonate

                                                                                     Lubna Ijaz,* Afzal Sheikh

       Department of Paediatric Surgery, The Children's Hospital & The Institute of Child Health Lahore, Pakistan


                                              *Corresponding Author's E-mail address:
drlubnabilal@yahoo.com

                                                                                   
APSP J Case Rep 2010; 1: 10



How to cite    Ijaz L, Sheikh A. Overlapping features of caudal regression syndrome and VACTERL complex in a neonate. APSP J Case Rep 2010; 1: 10




Dear Sir

Caudal regression syndrome (CRS) is characterized by a group of heterogeneous anomalies involving the distal spinal cord and vertebral column, genitourinary system, hind gut and limbs. The malformation may range from minor anomalies of spine and spinal cord to the extreme, the sirenomelia. Various authors pointed out an overlap of spectrum of anomalies in CRS and VACTERL (vertebral, anorectal, cardiac, tracheo-esophageal, renal and limb anomalies) complex.1-3 A case of a neonate is presented in whom the spectrum of congenital anomalies overlapped between CRS and VACTERL complex.

A 1-day-old male neonate weighing 2.8 kg presented to the emergency room of our institution with imperforate anus and absent left lower limb. The baby was a product of consanguineous marriage. The newborn was vitally stable and examination revealed imperforate anus, left lower amelia, sacral agenesis, megameatus intact prepuce, left sided undescended testis (UDT) and a small tag of tissue in place of the absent limb [Image].

Patient was admitted and routine neonatal care provided. Baby was subjected to various investigations. X-ray invertogram revealed high gas shadow in abdomen and sacral agenesis. Ultrasonography of the abdomen showed absent left kidney. Parents were counseled about the condition and a sigmoid loop colostomy performed for imperforate anus and discharged after two days.




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CRS is a heterogeneous group of anomalies that may involve distal spine, spinal cord, genitourinary system, hind gut, and limbs; whereas, existence of VACTERL complex in a patient is considered where at least three of six anomalies of this complex are present. 1-3

Few authors have reviewed more than 150 patients of sirenomelia and depicted at least three out of six anomalies of VACTERL complex in more than 98% of the patients.

Shah et al1, in 2006, reported a case of sirenomelia associated with esophageal atresia and tracheo-esophageal fistula. 1,4,5 Our patient had four out of six anomalies of VACTERL complex and also fulfilled the criteria of caudal regression syndrome.

It therefore appears that caudal regression syndrome and VACTERL complex may be the same spectrum of anomalies that coexist in various combinations.  As an overlap of the anomalies encountered, the use of the term caudal regression syndrome may be reserved for those cases having only caudal spinal and spinal cord anomalies, an event in isolation too rare, without multiple anomalies that usually overlap with the VACTERL complex. Moreover, it appears that both multi-anomaly-CRS and VACTERL anomalies may have similar etiological factors, a point that can be debated as more of such cases are reported.


REFERENCES

1. Shah DS, Tomar G, Preetkiran. Sirenomelia. Indian J Radiol Imaging 2006; 16:203-4.

2. Fayyaz A, Ilyas M, Iqbal O. Pre-natal diagnosis of caudal regression syndrome. J Coll Physicians Surg Pak 2007; 17: 425-6.

3. Taori KB, Mitra K, Ghonga NP, Gandhi RO, Mammen T, Sahu J. Sirenomelia sequence (mermaid): Report of three cases. Indian J Radiol Imaging 2002; 12:399-401.

4. Duncan PA, Shapiro LR, Klein RM. Sacrococcygeal dysgenesis association. Am J Med Genet 1991; 41: 153-61.

5. Stocker JT, Heifetz SA. Sirenomelia: a morphological study of 33 cases and review of the literature. Perspect Pediatr Pathol 1987; 10: 7-50.
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