Agenesis of sacrum and coccyx.
D000015:Abnormalities, Multiple; D001848:Bone Diseases, Developmental; D003050:Coccyx; D006801:Humans; D008588:Meningocele; D009141:Musculoskeletal System; D012445:Sacrococcygeal Region / Q000002:abnormalities; D012447:Sacrum / Q000002:abnormalities*; D013122:Spinal Diseases
COCCYX; SACRUM/absence