Spinal arachnoid cysts.
D000328:Adult; D000368:Aged; D001100:Arachnoiditis / Q000000981:diagnostic imaging; D003560:Cysts / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013131:Spine