Absence of an articular process, a rare expression of dysgenesis of the verbtal arch.
D000328:Adult; D006801:Humans; D008161:Lumbosacral Region / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008297:Male; D011859:Radiography; D013168:Spondylolisthesis / Q000000981:diagnostic imaging; D014054:Tomography