0003440 Horizontal sacrum

0005765 Sacral meningocele 1

0008455 Dysplastic sacrum

0008490 Sacral segmentation defect 3

0008517 Aplasia/Hypoplasia of the sacrum 3

0010767 Sacrococcygeal pilonidal abnormality 4

0025370 Abnormal ossification of the sacrum 2

0030736 Sacrococcygeal teratoma 4

0100781 Abnormality of the sacroiliac joint 3