Prenatal diagnosis of Meckel Gruber syndrome presenting with renal agenesis: report of a case.
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Biomedical subjects
Publications and source records attributed to S Ceylaner.
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We present an infant with diaphragmatic hernia, anophthalmia and cardiac defect evaluated by magnetic resonance imaging (MRI) autopsy. This female infant was born at 39th weeks by vaginal delivery and presented with diaphragmatic hernia, anophthalmia, cardiac defect and died due to respiratory problems at 28th hours of life. MRI autopsy showed internal organ abnormalities including congenital hernia of the left diaphragm, secondary hypoplasia of the left lung, atrial and ventricular septal defect, dilatation of calices of the kidneys, bilateral anophthalmia, hypoplasia of the optic nerves, hyperintensity of pituitary gland possibly due to bleeding and a cyst of the septum pellucidum. This article shows that MRI autopsy is a valuable method for the evaluation of cases with congenital anomalies if autopsy is not possible.
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A very large Turkish family with syndactyly type II (synpolydactyly (SPD)) is described, which originated from and is mainly concentrated in the village of Derbent, Afyon. The kindred consists of 425 subjects over seven generations, of whom 182 are affected. It appears that a founder effect in this village has led to this extensive kindred. This condition is inherited as an autosomal dominant trait with variable expressivity and an estimated penetrance of 96%. Penetrance is different between the upper (96%) and lower (69.5%) extremities. No excess of affected males or females or other associated features were documented in this condition. Variations in the involvement of one or both hands, upper or lower extremities, bone and soft tissue, as well as variation in the affected subjects of two successive generations were documented. We also noted that metacarpal and metatarsal involvement and middle phalangeal hypoplasia of the feet are the consistent features of SPD and, therefore, should be considered as characteristic of this phenotype. We observed four different phenotypes in various branches of the Derbent kindred: (1) subjects presenting typical features of SPD; (2) subjects exhibiting both pre- and post-axial polydactyly simultaneously; (3) persons manifesting postaxial polydactyly type A; and (4) subjects born to two affected parents with severe hand and foot deformities that have not been previously described in any other SPD families (that is, homozygotes). A total of 27 affected offspring were born to two such affected parents, of whom seven are expected to be homozygous for the SPD gene. This group is presented in an accompanying paper in this issue of the Journal. A molecular study is currently under way to identify the chromosomal location of the defective gene.