. 2021 Dec 23;434:120118. doi: 10.1016/j.jns.2021.120118

Table 2.

Clinical summary

Patient no.	Peripheral neurologic complication	Electrodiagnostic studies	Muscle & nerve biopsies
Patient no.	Peripheral neurologic complication	Electrodiagnostic studies	Magnetic resonance imaging
1	Brachial plexopathy	L. brachial plexopathy with sparing of axillary n. and suprascapular n. fibers	Not done
1	Brachial plexopathy		L. brachial plexus showed asymmetric T2-hyperintensity of plexus trunks, divisions, and cords
2	Brachial plexopathy	L. brachial plexopathy with sparing of axillary n. fibers	Not done
2	Brachial plexopathy	L. brachial plexopathy with sparing of axillary n. fibers	Diffuse L. brachial plexitis with serratus anterior muscle T2-hyperintense signal and enhancement reflecting acute denervation edema
3	Brachial plexopathy	Normal	Not done
3	Brachial plexopathy	Normal	L. brachial plexus showed increased T2 signal of the left C5, C6 and C7 nerve roots extending to the upper and middle trunks
4	Peripheral neuropathy	Bilateral sciatic neuropathies	L. PB. m biopsy: severe myofiber atrophy, rare myonecrosis
	Brachial plexopathy	Bilateral upper trunk brachial plexopathies	L. sural n. biopsy: severe, active axonal loss
	Entrapment neuropathy	Triceps-sparing L. radial neuropathy	Bilateral brachial plexi showed increased T2 signal in the C5/C6 roots
5	Peripheral neuropathy	Multiple mononeuropathies: R. radial n., musculocutaneous n., median n.	Not done
5	Peripheral neuropathy		Normal MRI of the R. brachial plexus
6	Peripheral neuropathy	Bilateral sciatic neuropathies	R. PB m. biopsy: moderate m. atrophy
	Entrapment neuropathy	Bilateral cubital tunnel syndromes; R. PIN entrapment	R. medial antebrachial cutaneous n. biopsy: myelinated axon loss with numerous phagocytosing macrophages within the endoneurium
	Entrapment neuropathy	Bilateral cubital tunnel syndromes; R. PIN entrapment	MRI R. forearm showed T2-hyperintense posterior interosseous nerve in the Arcade of Frohse
7	Peripheral neuropathy	L. sciatic neuropathy	Not done
7	Peripheral neuropathy	L. sciatic neuropathy	MRI L. lumbosacral plexus without contrast showed an enlarged, edematous L. sciatic nerve behind the L. greater trochanter, distal to the sciatic notch
8	Peripheral neuropathy	Bilateral sciatic neuropathies	R. SPN biopsy: severe axonal neuropathy without vasculitis or thrombosis
			R. PB m. biopsy: extensive m. atrophy
			MRI not done (normal CT pelvis without contrast)
9	Peripheral neuropathy	Complete R. facial axonotmesis	Not done
9	Peripheral neuropathy	Complete R. facial axonotmesis	MRI brain shows long segment enhancement of the R. facial nerve from the fundus of the intra-canalicular segment through the mastoid
10	Entrapment neuropathy	Not done; clinical diagnosis of bilateral common peroneal entrapment neuropathies at the fibular heads	Not done
10	Entrapment neuropathy		Not done
11	Entrapment neuropathy	Bilateral common peroneal (axonotmetic) neuropathies at the fibular head	Not done
11	Entrapment neuropathy		Not done
12	Entrapment neuropathies	L. common peroneal neuropathy at fibular head; R. median neuropathy at the wrist	Not done
12	Entrapment neuropathies		Not done
13	Entrapment neuropathy	R. ulnar neuropathy at cubital tunnel	Not done
13	Entrapment neuropathy	R. ulnar neuropathy at cubital tunnel	Not done
14	Entrapment neuropathies	R. ulnar neuropathy at Guyon's canal; L. common peroneal neuropathy at the fibular head	Not done
14	Entrapment neuropathies		MRI R. wrist showed R. ulnar nerve enlargement and increased signal in Guyon's canal

Abbreviations: L = left, R = right, PB = peroneus brevis muscle, m. biopsy = muscle biopsy, SPN = superficial peroneal nerve, n. biopsy = nerve biopsy, PIN = posterior interosseous nerve.