Localized enlargement of the spinal canal in the absence of tumour:  a congenital abnormality.
D000013:Congenital Abnormalities; D006801:Humans; D006984:Hypertrophy; D009369:Neoplasms; D013115:Spinal Canal / Q000002:abnormalities*; D013122:Spinal Diseases
ABNORMALITIES; SPINAL CANAL/abnormalities