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Curious Case in the works - any thoughts


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a develping case

76 yr old white female

mild htn and obesity, htn well controlled on meds

20-30 yr hx of being on pred low dose for presumptive PMR?
Has some pain complaints, LS MRI shows moderate stenosis

loosing mobility, EMG legs shows denervation of both quads

Neuro is stumped (Attending and PA both are out of thoughts)

 

CRP was elevated(mildly), ESR, RA w/u negative as was all labs and heavy metals

lyme neg

 

recent flair of pain responded well to pred burst

 

has been referred to a tertiary neuro clinic

 

 

Any thoughts???

 

 

Has been referred to a physiatry clinic specializing in neuromuscular

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What about distal upper extremities?  Dorsal deformities of hand digits (similar to spooning appearance)?  Grip weakness?  Dysphagia?

Polymyositis, or more specifically, Inclusion Body Myositis.  Treatment, if this, is NOT to give steroids!  Influenza vaccination can also exacerbate myositis episode.  Distal LE weakness may appear initially but there will be loss of grip strength and fine motor movements due to digital deformities.

Diagnosis is based on muscle bx. and pathologist needs to know what to look for.

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14 hours ago, GetMeOuttaThisMess said:

What about distal upper extremities?  Dorsal deformities of hand digits (similar to spooning appearance)?  Grip weakness?  Dysphagia?

Polymyositis, or more specifically, Inclusion Body Myositis.  Treatment, if this, is NOT to give steroids!  Influenza vaccination can also exacerbate myositis episode.  Distal LE weakness may appear initially but there will be loss of grip strength and fine motor movements due to digital deformities.

Diagnosis is based on muscle bx. and pathologist needs to know what to look for.

no UE issues

grip stength grossly normal

no inspection findigs on hands

 

 

I am hoping for muscle and nerve Bx....... 

 

 

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Guest Samhain_Grim

You mention EMG showing denervation; any myopathic potentials? Nerve conduction studies with CMAPs, SNAPs, conduction velocity? Any spasticity, changes to reflexes? Muscle wasting? CK level? You mention pain and response to steroids; is there muscle cramping specifically?

Needs an LP if not done yet. Maybe muscle biopsy if has myopathic findings. Sounds myopathic because it's proximal, but if EMG is showing denervation specifically then perhaps not. If inflammatory myopathy, expect CK to be elevated. Possible GBS if EMG looks demyelinating. Depending on other findings, worst case would be the beginnings of motor neuron disease. If it was rheumatological, I think it would be odd to just involve motor, but I'm unsure..

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