PMC6159146_01
(a) Preoperative CT of the cervicothoracic spine. Sagittal CT shows diffuse epidural calcification at C3-T6. (b) Axial CT of the C5/6 level reveals crescent-shaped mass which has a well-defined border along the vertebral arch.
bjrcr.20170049.g001.jpg
PMC6159146_01_bjrcr.20170049.g001.jpg
f1
The lesion presented as a crescent shape along the spinal dura mater and had a well-defined border along the vertebral arch (Figure 1).
Preoperative MR imaging of the cervical spine. The lesion shows hypointensity on both (a) T2 and (b) T1 weighted images which causes spinal canal stenosis. (c) Sagittal post-contrast T1 weighted imaging demonstrates heterogeneous enhancement.
bjrcr.20170049.g002.jpg
PMC6159146_01_bjrcr.20170049.g002.jpg
f2
T1 and T2 weighted images. The lesion displayed heterogeneous enhancement, and caused cervical spinal canal stenosis (Figure 2).
Perioperative photograph. Grayish-white, solid calcified mass (arrows) is found just beneath the ligamentum flavum (not shown).
bjrcr.20170049.g003.jpg
PMC6159146_01_bjrcr.20170049.g003.jpg
f3
A solid, grayish-white lesion was found just beneath the ligamentum flavum (Figure 3).
Photomicrograph of biopsy specimen (haematoxylin and eosin stain, original magnification x100). Numerous granular calcium crystals (arrows) are deposited within dense fibrous tissue with myxoid change.
bjrcr.20170049.g004.jpg
PMC6159146_01_bjrcr.20170049.g004.jpg
f4
Histopathological examination of the specimen demonstrated numerous granular calcium crystals within dense fibrous tissue with myxoid change (Figure 4).