Bilateral cervical spondylolysis of C7.
BACKGROUND
Cervical spondylolysis, which is defined as a cleft between the superior and inferior articular facets of the articular pillar, is a rare condition. The sixth cervical vertebra (C6) is the level most commonly affected. Cases involving C2, C3, C4, or C5 have also been reported. However, to date, no case of C7 spondylolysis has been reported.


OBJECTIVE
To present a rare case of bilateral spondylolysis of the seventh cervical vertebra (C7) in a 58-year-old man.


METHODS
A case report.


METHODS
A 58-year-old man visited our hospital with chronic posterior neck pain radiating to the left upper extremity. Magnetic resonance imaging (MRI) study revealed left foraminal disc herniations at C5-C6 and C6-C7. Cervical spondylolysis involving C7 was discovered incidentally during computed tomography (CT)-guided transforaminal steroid injection. Plain radiographs, CT images, and MRIs were reviewed thoroughly once again.


RESULTS
The patient's symptoms were relieved after he received CT-guided transforaminal steroid injections. Plain radiographs revealed a radiolucent defect in the articular pillar and cleft at the spinous process of C7. Computed tomography confirmed bilateral spondylolysis and spina bifida occulta of the C7 vertebra. Magnetic resonance imaging revealed absence of edema, which was suggestive of a chronic lesion.


CONCLUSIONS
Involvement of C7 is not exceptional in a case of cervical spondylolysis.
Department of Radiology, Arumdaun Wooldul Spine Hospital, Nam-gu, Ulsan, Republic of Korea. srsna@freechal.com
Nam Chull
NC
Paik
D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D002574:Cervical Vertebrae / Q000002:abnormalities*; D006801:Humans; D033162:Incidental Findings; D007270:Injections, Intra-Articular; D007405:Intervertebral Disc Displacement / Q000150:complications / Q000188:drug therapy; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019547:Neck Pain / Q000209:etiology / Q000473:pathology; D016136:Spina Bifida Occulta / Q000473:pathology; D013169:Spondylolysis / Q000473:pathology*; D014057:Tomography, X-Ray Computed
D000305:Adrenal Cortex Hormones