Autosomal dominant spondylocostal dysostosis is a very rare and mild form of spondylocostal dysostosis characterized by vertebral and costal segmentation defects, often with a reduction in the number of ribs. The disease is autosomal dominant spondylocostal dysostosis (MONDO_0015826). Also known as: autosomal dominant spondylocostal dysplasia, spondylocostal dysostosis, autosomal dominant.