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AJR Teaching File: Progressive Polyradiculopathy

Geoffrey P. Fletcher1 and Catherine C. Roberts1

1 Both authors: Department of Radiology, Mayo Clinic College of Medicine, 13400 E Shea Blvd., Scottsdale, AZ 85259.


Figure 1
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  		Fig. 1A —41-year-old man with leg weakness, decreased dexterity in hands, and numbness in umbilical and perineal regions. Axial T1-weighted gadolinium-enhanced MR image through internal auditory canals shows enhancement of enlarged bilateral cranial nerves VII and VIII (large arrows) within internal auditory canals. Geniculate ganglia and horizontal portions of cranial nerve VII (small arrows) are also enlarged. There is marked hypertrophy of cranial nerve V (arrowheads) in region of Meckel's cave and extending out through foramen rotundum (V2).

 

Figure 2
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  		Fig. 1B —41-year-old man with leg weakness, decreased dexterity in hands, and numbness in umbilical and perineal regions. Sagittal T1-weighted cervical spine MR images before (B) and after (C) gadolinium administration show enlarged, enhancing nerve roots (arrows, C) at all levels.

 

Figure 3
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  		Fig. 1C —41-year-old man with leg weakness, decreased dexterity in hands, and numbness in umbilical and perineal regions. Sagittal T1-weighted cervical spine MR images before (B) and after (C) gadolinium administration show enlarged, enhancing nerve roots (arrows, C) at all levels.

 

Figure 4
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  		Fig. 1D —41-year-old man with leg weakness, decreased dexterity in hands, and numbness in umbilical and perineal regions. Sagittal T1-weighted gadolinium-enhanced MR image through lumbar spine shows enlarged enhancing nerve roots (arrows) at all levels.

 

Figure 5
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  		Fig. 1E —41-year-old man with leg weakness, decreased dexterity in hands, and numbness in umbilical and perineal regions. Sagittal T1-weighted gadolinium-enhanced MR image through midline cervical spine reveals no abnormal cord or meningeal enhancement.

 

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