Malformation of the iliac bone associated with intraspinal abornalities

Two cases of intraspinal abnormalities combined with a characteristic unilateral protuberance of the iliac bone are reported. A search of the literature revealed only 2 other examples of this condition, but analysis of the associated findings in all 4 cases suggested a specific syndrome consisting of the iliac protuberance, other ipsilateral osseous abnormalities, and occult spinal dysaphism including intraspinal lipoma.