Ring chromosome 12 with variable phenotypic features: clinical report and review of the literature

A ring chromosome 12 (p13; q24.33) was observed in all cells analyzed from peripheral blood lymphocytes of a 15-year-old female referred for academic difficulties and growth delay. In addition to clinical manifestations generally observed with ring chromosome 12 such as growth retardation, mental deficiency, microcephaly, the patient had bilateral pseudocamptodactyly of little fingers, mild hirsutism, exaggerated lumbar lordosis, and ostium secundum atrial septal defect (ASD). The clinical features of reported cases are analyzed. The only consistent features were growth retardation and mental deficiency. Breakpoint in all the cases has been at the telomeric region with minimal deletion of chromosomal material. An account of complex changes at mitosis and meiosis in ring chromosome has been given. Examination of 200 metaphases demonstrated 2% cell line was showing 45,XX, -12. Serum lactate dehydrogenase (LDH) level was normal ruling out overlapping monosomy 12 syndrome.

Ovarian dysgenesis with balanced autosomal translocation

Autosomal translocations are rare in the patients with ovarian dysgenesis. An 18-year-old female who presented with primary amenorrhoea had hypergonadotropic hypogonadism and streak ovaries with hypoplastic uterus. Karyotype analysis revealed a balanced autosomal translocation involving chromosomes 1 and 11. The probable role of autosomal translocations in ovarian dysgenesis has been discussed.

Krabbe disease--clinical profile

OBJECTIVE

To study clinical features and investigations of children with Krabbe Disease (KD).

DESIGN

Retrospective.

SETTING

Genetic Clinic of a tertiary care teaching hospital.

METHODS

Hospital records of patients with enzymatically confirmed KD were analyzed with respect to their clinical features and investigations including neuroimaging (CT-scan and/or MRI). Galactocerebrosidase (GALC) activity was estimated photometrically in the peripheral blood leukocytes.

RESULTS

Nine children (age ranging from 2 1/2 months to 8 years) were studied, of which 5 had the classical infantile disease, 3 had late infantile form and one was diagnosed as juvenile KD. GALC levels in peripheral blood leukocytes were low or absent in all. Most of the children with infantile disease presented with neurodegeneration, seizures or fever. Optic atrophy was uncommon in our series (present only in a single case). Majority of the cases had elevated cerebrospinal fluid (CSF) protein levels and peripheral neuropathy on nerve conduction (NC) studies. Findings typical of KD were noted in 7 patients who underwent magnetic resonance imaging (MRI). The sole patient with juvenile disease presented with developmental delay and progressive spastic quadriparesis.

CONCLUSION

Krabbe disease should be considered in the differential diagnosis of early infantile onset of neurodegeneration with seizures. Likewise, older children with progressive ataxia or spastic quadriparesis in whom the etiology remains obscure, must be investigated for Krabbe disease. MRI can be diagnostic in absence of availability of enzyme diagnosis.

Unusual hand malformations with cardiac defects--a variant of heart--hand syndrome IV

Reported below is the association of unusual hand malformations and congenital cardiac anomalies, possibly a variant of Heart--Hand syndrome IV in a 10 year old male. In addition to these malformations, he also had genitourinary defects. The differential diagnosis of polydactyly with cardiac defects is discussed along with a review of relevant literature.

Neurofibromatosis-Noonan syndrome or LEOPARD Syndrome? A clinical dilemma

Neurofibromatosis (NF), Noonan syndrome (NS), and LEOPARD syndrome are all autosomal dominant conditions, each being a distinct clinical entity by itself. Rarely, one encounters cases with features of NF and NS and is termed as the 'Neurofibromatosis-Noonan syndrome' (NF-NS). The authors report a clinical dilemma with major clinical features of the NF-NS syndrome and LEOPARD syndrome co-existing in the same patient. Also, features of Noonan syndrome and LEOPARD syndrome are compared with the case reported.

Autosomal dominant ectrodactyly with sensorineural deafness

Ectrodactyly or split hand/split foot malformation as it is now known, is a rare developmental disorder sometimes associated with other systemic malformations. Very few cases of congenital hearing loss coexisting with ectrodactyly have been reported world-wide. We profile one such family with the father and daughter being affected with bilateral foot ectrodactyly minor abnormalities of the 5th fingers and severe sensorineural hearing loss (SNHL). The inheritance in this family was likely to be autosomal dominant. There were no cytogenetically demonstrable structural aberrations in either case.

Superior sagittal sinus thrombosis: a rare complication of nephrotic syndrome

A two and half year-old-male child, known case of steroid responsive nephrotic syndrome presented with fever and vomiting of acute onset. He was diagnosed to have superior sagittal sinus thrombosis on a contrast computerised tomographic scan of brain. Recovery was complete without anticoagulant therapy. Superior sagittal sinus thrombosis is an extremely rare complication of nephrotic syndrome.

Benzathine penicillin induced immune haemolytic anaemia

Penicillin-induced immune haemolytic anaemia is very rare. A ten year-old-female with rheumatic mitral stenosis on benzathine penicillin prophylaxis presented with features of haemolytic anaemia and investigations supported the diagnosis of immune haemolytic anaemia. Patient responded to discontinuation of the drug and therapy with oral prednisolone. This is first such case reported from India.

Familial glucocorticoid deficiency, alacrimia and achalasia--Allgrove syndrome

We report three brothers with Allgrove syndrome. All three had evidence of adrenal insufficiency and deficient tear production, though neither of them had achalasia, the third component of the disorder at the time of this report. Neurological abnormalities were present in the index case. The younger siblings were neurologically normal. The familial association of achalasia, alacrimia and adrenal insufficiency, rather than being fortuitous, is a distinct clinical entity.

Cri-du-chat syndrome: clinical profile and prenatal diagnosis

Prenatal diagnosis of cri-du-chat syndrome is described in 2 pregnancies. In Case 1, the mother was a balanced translocation carrier and had 2 previously affected off springs. Prenatal diagnosis by chorion villus sampling and cordocentesis was successful in diagnosing an affected conceptus and the pregnancy was electively terminated. Case 2 was referred for nonimmune foetal hydrops and cordocentesis revealed deletion 5p. This second case was noteworthy for the fact that deletion 5p has not been reported to cause foetal hydrops.

Familial congenital valvar pulmonary stenosis: autosomal dominant inheritance

A mother and three of her four children, one girl and two boys, who had valvar pulmonary stenosis are described. One child had an associated septum secundum atrial septal defect, and another had an associated ventricular septal defect. An autosomal dominant mode of inheritance is likely for the valvar pulmonary stenosis. The association of additional cardiac lesions in two of the three siblings raises the possibility of closely associated genetic loci.

Supernumerary limbs: a case report of a rare congenital anomaly

We report a case of an 18-month-old female who presented with three supernumerary upper limbs of varying lengths on the right side. Each limb had a proximal, middle, and distal segment, and an intercalated elbow and wrist joint. A single digit was present in the superior limb, three digits in the middle limb, and two digits in the caudal-most limb. Right plagiocephaly, congenital torticollis, scoliosis involving the upper and mid thoracic region, and a hypoplastic right pectoralis major were the other abnormal features noted. Radiography showed two scapulae, humerus, a single forearm bone in each limb, and rudimentary metacarpals and phalanges. Limb duplication may rarely be encountered in parasitic conjoined twins. The role of mutagens, drugs, cellular contributions, and morphogens in the growth and differentiation of limbs has been studied in animals. It is rather difficult to deduce the time of action of the factors responsible for such a malformation.

Clinical and enzyme studies in Gaucher disease

OBJECTIVE

To study the clinical and biochemical spectrum of Gaucher disease.

DESIGN

Assay of beta glucosidase enzyme in leucocytes in patients with splenomegaly, and in chorionic villi for prenatal diagnosis.

SETTING

Hospital-based.

SUBJECTS

Of 13 cases of Gaucher disease, aged 1-6 years, 9 were identified at Delhi and 4 at Bombay.

RESULTS

The enzyme beta-glucosidase was 0.65 nmol/h/mg of protein or less in all the cases in Delhi, and 2.5 nmol/h/mg of protein or less in Bombay. All cases except one belonged to type 1 (hepatosplenomegaly), while one case was of type 2 (neuronopathic). Prenatal diagnosis was carried out in one family and the fetus was found to be affected.

CONCLUSION

In children with hepatosplenomegaly and increased acid phosphatase, assay of beta-glucosidase enzyme confirms the diagnosis of Gaucher disease. Diagnosis of the disease is important because enzyme replacement therapy is available and prenatal diagnosis is possible.

Craniosynostosis with Marfan syndrome, hand and foot anomalies

We report a patient with various connective tissue abnormalities suggesting a distinctive connective tissue disorder combining some features of the Marfan syndrome with craniosynostosis and hand and feet anomalies.

Cri du chat syndrome

Three cases of cri du chat syndrome with varying ages of presentation are compared and contrasted to highlight the clinical features and evolution of the phenotype with time.

Mucolipidoses--II: A report of three cases

Mucolipidoses II is a rare lysosomal storage disorder with autosomal recessive inheritance. There cases with typical clinical features in early infancy like coarse facial features, severe psychomotor retardation and joint contractures are being reported. All the cases had no mucopolysacchariduria. These cases had normal values of lysosomal enzymes in leucocytes but markedly increased values in serum thus confirming mucolipidoses II. Despite the fact that there is no specific treatment, genetic counselling and prenatal diagnosis is indicated.

Klippel-Trenaunay-Weber syndrome with hydrocephalus: an unusual association

Macrocephaly is an associated finding with Klippel-Trenaunay-Weber syndrome, the cause of which remains to be determined. Association of this syndrome with hydrocephalus due to aqueductal stenosis has not been reported previously in world literature and is presented in this clinical brief.

Evaluation of short neck: new neck length percentiles and linear correlations with height and sitting height

Qualitative impressions of neck length are often used as aids to dysmorphology in syndromes like Turner, Noonan, Klippel-Feil and in craniovertebral anomalies, some of which have serious neurological implications. There are no national or international standards for neck length. The present study attempted to create standards and percentile charts for Indian children and compute age-independent correlations of neck length with linear measurements such as standing and sitting height. A total of 2724 children of both sexes between 3 and 15 years, whose heights and weights conformed to ICMR standards were inducted. Neck length was measured by a modified two-point discriminator between two fixed bony points-inion and spinous process of C7 with the head held in neutral position. Percentiles (5th-95th) were constructed for both sexes. Growth was rapid from 3 to 6 years. Neck length formed a mean of 12.7 +/- 4.58% of height and 20.1 +/- 6.73% of sitting height. Age independent linear regression equations: Neck length = 10 + (0.035 x height) and Neck length = 9.65 + (0.07 x sitting height) were highly significant (p < 0.001). Neck length relationships of 30 randomly selected normal children clustered around the regression lines and 16 with genetic syndromes fell below the regression lines.

Storage disorders presenting like mucopolysaccharidosis

The term dysostosis multiplex is specifically applied to the group of radiological features collectively found in a number of specific metabolic disorders including the mucopolysaccharidoses, mucolipidosis, mannosidosis, fucosidosis and several other rarer conditions. We report eight cases of mannosidosis, fucosidosis and mucolipidosis with special emphasis on the differentiation from the more common mucopolysaccharidoses.

Massive haemoptysis controlled by bronchial artery embolisation: a case report

Massive haemoptysis results in a high rate of mortality and morbidity. It is infrequently seen in children. Medical and surgical interventions are not very effective in controlling torrential bleeding. Therefore, newer modalities like bronchial artery embolisation are found to be promising in life threatening situations in both adults and children.

Spondylocostal dysostosis

Spondylocostal dysostosis is a rare condition characterized by short stature due to a short trunk, multiple morphological abnormalities of the vertebrae and ribs due to malsegmentation of the axial skeleton. Radiological features include reduced number of vertebrae and ribs, hemivertebrae, fused or sagitally cleft vertebrae or multiple rib fusions. Three distinct clinical entities are described. We report nine cases of this syndrome, seven were infants and presented with an abnormal shape of the thorax. Two of them had a meningocoele, and one succumbed to the CNS anomalies on the third day of life. The other two cases were two and eight years of age. Cardiac lesion was detected in one case and renal malformations in three cases. Reduction in the rib number was present in all cases, and rib fusion in seven cases. Thoracic vertebral dysegmentation was noted in all, lumbar in three and cervical in one case. This is the first large series from India. No clear single etiology was established.

The Proteus syndrome

A race case of Proteus syndrome is presented. The main features of this hamartomatous condition are partial gigantism of hands and feet, hemihypertrophy, subcutaneous masses, epidermal nevi and bony abnormalities. The condition is extremely rare. Though the child had severe cosmetic disability, motor intellectual and language development was found to be normal.

Fraser syndrome

Fraser Syndrome is a rare disorder with only a few cases having been described in Indian literature. We report here a case of a patient aged 16 yr present with primary amenorrhea which is a very unusual mode of presentation. Multiple associated anomalies were present including those of eyelids, eyebrow, face, fingers and genitalia. Chromosome analysis revealed a normal female karyotype. Pituitary gonadotropins were within normal range.

Pseudoachondroplastic dysplasia

Pseudoachondroplasia is a heterogeneous inherited skeletal dysplasia in which dwarfism is a major feature. We report here a case of a 7 year old girl misdiagnosed as rickets, who presented with short stature, lordosis, genu varum and flexion deformities at both the elbows. Skeletal survey revealed epiphyseal and metaphyseal irregularities. A review of literature is also presented.

Wildervanck syndrome (cervico-oculo-acoustic syndrome)

Wildervanck syndrome i.e. cervico (Klippel-Feil anomalad) -oculo (Duane-Stilling-Turk phenomenon with bilateral abducens palsy)-acoustic (deafness) is a rare syndrome. We report here 4 cases diagnosed as Wildervanck syndrome and analyse their findings. One patient had an an atrial septal defect. Such association of congenital heart disease with Wildervanck syndrome has not been reported previously.

Asymmetric crying facies: the cardiofacial syndrome

A 5 1/2 month old female child presented with cyanosis and recurrent respiratory infection. Asymmetric facies was noticed on crying. On investigation an ostium secundum atrial septal defect with right partial anomalous pulmonary venous connection and severe pulmonary hypertension was detected. The association of asymmetric crying facies with congenital cardiac anomalies, known as cardiofacial syndrome, is presented here to highlight the use of this clinical sign as a marker to congenital anomalies.

MURCS association--a review of 7 cases

MURCS association (Mullerian hypoplasia/aplasia, renal agenesis and cervicothoracic somite dysplasia) is emerging as the second most frequent cause of primary amenorrhoea after Turner syndrome. Seven cases have been described and analysed. All cases had absence of uterus and tubes 85% had cervical spine abnormalities such as vertebral fusion, hypoplasia of vertebrae or butterfly vertebrae and short stature and 28% had renal agenesis or ectopy. The latter finding is in contrast to the reports in world literature where the frequency of renal agenesis is higher. There was no familial incidence in these seven cases lending credence to the belief that the association is essentially sporadic.

Efficacy of three doses of oral polio immunization beginning within the first four days of life

A study was carried out to test the efficacy of oral polio immunization commencing in the newborn period. In Group A, 47 term newborn infants were given trivalent oral polio vaccine (TOPV) within the first four days, at one month and at two months. In Group B, 21 infants were given TOPV at 3, 4 and 5 months. The seroconversion rates for types 1, 2 and 3 were 87.2, 95.7 and 72.3%, respectively in Group A and 85.7, 95.2 and 66.7%, respectively in Group B after 3 doses of TOPV, the differences being insignificant. Oral polio immunization beginning in the newborn period was as effective as when commenced at 3 months of age. Before immunization, the number of babies with protective titers against polioviruses were significantly more in Group A as compared to Group B. Thus, the later onset of immunization schedule leaves more children susceptible to poliomyelitis during the first 3 months of life.