Chronic Immune Demyelinating Polyneuropathy (CIDP)

Thinly myelinated axons.
Axon loss.

Thinly myelinated axons.
Patchy axonal loss.

Onion bulbs: Small

Subperineurial edema

Subperineurial edema

H&E stain

CIDP: Muscle

ATPase pH 9.4 stain
Type 1 muscle fiber predominance

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