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A 57-year-old previous healthy woman was referred to our hospital due to progressive weakness, numbness and pain in the left leg for 3 months. She initially suffered from pain and numbness at left buttock and posteriolateral thigh without limitation in her daily activities. Two months later, the pain rapidly progressed to her left calf and dorsal foot, and weakness in left ankle followed by left proximal leg developed. She also felt numbness at right index finger, clumsiness in right hand and stress urinary incontinence. Neurological examinations showed normal functions of cranial nerves, weakness in flexion and extension of left hip, knee and ankle. Deep tendon reflexes at left knee and ankle were absent. Sensory evaluation showed hypoesthesia at left posteriolateral thigh and leg, and dorsal foot. Nerve conduction studies and electromyography showed (1) reduced amplitudes of compound muscle action potentials …
Contributors H-HT contributed to the drafting and the image processing of the manuscript. Y-FC contributed to the image interpretation and the manuscript revising. S-TH contributed to the revision of the manuscript. C-CC contributed to the manuscript revising and final approval of the submission.
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.