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July 1993, Volume 43, Issue 7

Case Reports

Escobar Syndrome

Tehmina Mustafa  ( The children’s Hospital, Pakistan Institute of Medical Sciences, G-8/3, Islamabad. )
Shamim A. Qazi  ( The Children’s Hospital, Pakistan Institute of Medical Sciences, G-8/3, Islamabad. )
Mushtaq A. Than  ( The children’s Hospital, Pakistan Institute of Medical Sciences, G-8/3, Islamabad. )

Originally described by Bussiere in 1902, this disorder was fully delineated by Escobar et alas a distinct entity in 19781,2. About 50 cases have been reported2. The disorder mainly appears to affect muscles, with muscle degeneration and disorganization of myofibrils having been noted in biopsies. The inheritarice is autosomal recessive. The classical syndrome also known as multiple pterygium syndrome has been found to have the follow­ing features1,2: small stature, ptosis of eyelids, inner canthal folds, micrognathiawith down- turning of mouth, pterygia of neck, axillae, elbows and knees (pterygium means shaped like a wing), pterygia plus camptodactyly (permanent and irreducible flexion of one or more fingers), syndactyly, equinovarus and/or rocker-bottom feet, numerous flexion contractures of joints, cryptorchi­dism, absence of labia majora and vertebral and/or rib anomalies. Occasional abnormalities include scoliosis, dislocation of the hip, hypoplastic nipples and cleft palate.

Case Report

A four years old girl from Dera Ismail than was admitted with complaints of “multiple limb deformities”. She was the product of a full term, uncomplicated pregnancy and vaginal delivery. Her parents were first cousins, with three other normal children. Father was 24 and mother was 19 years old at the time of birth. The family history was negative for congenital abnormalities. At birth she had flexion deformity of both the elbow and ankle joints. Birth weight was not done. Motor development was delayed, she held neck at 10 months, sat at 1 year and started walking at three and a half years of age. Intellectually she developed normally. On examination she had small stature, her weight and height were both below 2 standard deviations for her age. She had a flat, emotionless face with downward turning of the mouth and low set ears. She did not have micrognathia. She had pterygia of neck, axillae, antecubi­tal and popliteal areas. She had scoliosis and widely spaced hypoplastic nipples. Camptodactyly with partial syndactyly of the fingers was present. Both feet had a rocker bottom appearance. All her nails were normal. On genital examination her labia majora were absent, normal labia minora and introitus were present. Pelvic ultrasound revealed a hypoplastic uterus, but ovaries could not be clearly identified. No abnormality could be detected in cardiovascular, respiratory, gastro­intestinal or central nervous system examination. She had difficulty in standing straight and walking, probably due to limb deformities and spinal defect. Upper limb and hand functions were quite reasonable. Chromosomal analysis showed normal karyotyping with 46XX chromo­somes. Echocardiography did not reveal any congenital defect. Muscle biopsy could not be done.

Discussion

The most common recessively inherited disorder with limb pterygia is multiple pterygium syndrome, which must be differentiated from popliteal pterygium syn­drome which has dominant inheritance3. The most distinctive features in the popliteal pterygium syndrome include: pterygia of popliteal areas, lip pits, an­kyloblepharon fihiforme adnatum (congenital adhesion of the upper and lower eyelids by filamentous bands), oral frenula (mucosal folds), reduction defects of the digits and the characteristic nail anomalies (a pyramidal skin fold extending into the base of the nail and dermal skin ridges over toes, particularly the hallux) 3. Some of these cases are confounded with other entities primarily because of incompleteness and incon­sistency in reporting of clinical findings. It might be mistaken for the ‘Turner’ phenotype with arthro-grypo­sis4, Marfan syndrome5, Pterygoarthromyo-dysplasia Congenita and Bonnevie-Ulrich syndrome3. Escobar1 and Hall3 in their excellent reviews of 20 and 48 cases respectively differ in the frequency of different findings present in the reported cases of multiple pterygium syndrome (Table).

The pattern of malformations seen in this case clearly represents the multiple pterygium syndrome. Since these patients have normal I.Q. the long term consequences depend upon the extent of management in early life. If adequately managed by appropriate physio­therapy and surgical correction in time, they can lead an almost normal life. Sexual development though late, is usually complete. A case has been reported where a female patient has given birth to a completely normal child6.

References

1. Eacobar, V., Bixler, D., Gleiser, S., Weaver, D. and Gibbs, T. Multiple ptetygium syndrome. Am.J.Dis. Child., 1978;132:609-11.
2. Jones, K.L., Smith’s recognizable patterns of human malformation (4th ed). W.B. Sauders, Philadelphia, 1988, pp. 264-65.
3. Hall, J.G., Reed, S.D., Rosenbaum, lCN. etal. Limb ptetygium syndromes: a reviewand report of eleven patients. Am.J. Med. Genet., 1982;12:377-409.
4. Krieger, I. and Espiritu, CE. Arthrogryposia multiplex congenita and the Turner phenotype. Am.J. Dis. child., 1972;123:141-44.
5. Golden, R.L., and Lskin, H. The Forme Fruate in Marfan\\\'s Syndrome. N. Engl. J. Med., 1959;260:797-801.
6. Gillin, M.E., and Pryce-Davis, J. Case report. Fterygium syndrome. 3. Med. Genet., 1976;13:249-51.

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