Calcified and ossified plaques of the spinal arachnoid membranes.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001099:Arachnoid / Q000473:pathology*; D001344:Autopsy; D002114:Calcinosis; D005260:Female; D006801:Humans; D008297:Male; D008578:Meninges / Q000473:pathology*; D008875:Middle Aged; D013116:Spinal Cord / Q000473:pathology*