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  Indian J Med Microbiol
 

Figure 1: (a) Initial magnetic resonance image. Sagittal and coronal images demonstrate odontoid impression on the medulla and cervicomedullary junction. No signal abnormality was seen within this portion of the brain stem or upper cervical cord. Maximal diameter of the syrinx at the cervical level measures 0.7 mm × 4.9 mm × 0.7 mm at the C6–C7 level. (b) Repeat magnetic resonance image 6 months later. Sagittal and coronal images show unchanged basilar impression but worsened syringohydromyelia. The syrinx now measures 1.3 cm × 6.5 cm × 1.2 cm in the transverse craniocaudal and anteroposterior planes and extends from C3 to T1

Figure 1: (a) Initial magnetic resonance image. Sagittal and coronal images demonstrate odontoid impression on the medulla and cervicomedullary junction. No signal abnormality was seen within this portion of the brain stem or upper cervical cord. Maximal diameter of the syrinx at the cervical level measures 0.7 mm × 4.9 mm × 0.7 mm at the C6–C7 level. (b) Repeat magnetic resonance image 6 months later. Sagittal and coronal images show unchanged basilar impression but worsened syringohydromyelia. The syrinx now measures 1.3 cm × 6.5 cm × 1.2 cm in the transverse craniocaudal and anteroposterior planes and extends from C3 to T1