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A new lethal autosomal recessive skeletal dysplasia with associated dysmorphic features.

We report a fetus noted on routine ultrasonography at 21 weeks gestation to have a skeletal dysplasia with reduced ossification of shortened long bones and normal sized ribs. The consanguineous parents elected to continue the pregnancy and spontaneous labour occurred at 33 weeks gestation. The child died in the neonatal period. At necropsy, the main skeletal features were abnormal vertebrae with variation in shape and size, and ossification centres, short angulated long bones with distorted metaphyses and multiple abnormalities and fusions of the phalanges and metacarpals. In addition there was hydrops fetalis, a 'digit like' appendage overlying the left biceps muscle, a small chest with pulmonary hypoplasia and facial dysmorphism. In a subsequent pregnancy the fetus was noted at 13 weeks gestation to have nuchal translucency and bilaterally short femora. The fetus progressively developed hydrops fetalis and intrauterine death occurred at 22 weeks gestation. Post mortem examination revealed features very similar to the previous sibling. We suggest that this a new lethal osteochondrodysplasia syndrome. Recurrence in female siblings and parents who are double first cousins, strongly indicate autosomal recessive inheritance.