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7 Possible Causes for Neurogenic Changes (EMG and Biopsy)

Did you mean: Neurogenic Changes (EMG and Biopsy

  • Nemaline Myopathy

    Electromyography (EMG) showed a combination of myopathic and neurogenic changes.[] Triceps muscle biopsy showed small multiple collections of rod-like structures in 50% of fibers.[]

  • Lower Motor Neuron Syndrome with Late-Adult Onset

    Nerve conduction velocities were within normal range and EMG showed widespread neurogenic alterations.[] MRI showed diffuse fatty-degenerative changes, marked in medial gastrocnemius.[] Muscle biopsy revealed characteristic neurogenic findings: fiber type grouping and group atrophy.[]

  • Distal Myopathy Type Welander

    , without any myopathic or neurogenic changes.[] Subject IV:4, whose clinical examination result was normal, underwent EMG 1 year before his participation in this study because of lower back pain; his EMG result was normal[] The muscle biopsy specimen obtained from the vastus lateralis muscle showed only minimal fiber size variability, with infrequent, small, rounded fibers.[]

  • Adult Primary Lateral Sclerosis

    […] may reveal signs of active and chronic motor denervation; and muscle biopsy may demonstrate neurogenic changes. 84, 88 Also, patients given a diagnosis of PLS while alive[] Muscle biopsy demonstrates inflammatory changes in all three, with rimmed vacuoles, amyloid deposition, and filamentous intranuclear inclusions in IBM.[] In IBM, chronic neurogenic motor unit potential abnormalities are not uncommon.[]

  • Vacuolar Neuromyopathy

    , with certain neurogenic features on electromyography (EMG), (v) normal or mildly elevated serum CK, (vi) muscle biopsies displaying rimmed vacuoles without obvious dystrophic[] […] weakness beginning in the distal leg muscles, typically in the anterior tibialis muscle, with the quadriceps muscle remaining relatively unaffected, (iv) mainly myogenic changes[]

  • Inclusion Body Myositis

    changes were not found in any of the muscle biopsy specimens of the 9 patients with IBM in this study.[] Moreover, intramuscular nerves almost always appear normal in IBM. 27 Single-fiber EMG and macro-EMG have shown no evidence of a neurogenic disorder in IBM. 5 , 22 , 25 Neurogenic[]

  • Monomelic Amyotrophy

    EMG is a classic pitfall for the unwary as it can appear neurogenic with fibrillation potentials.[] The muscle biopsy is diagnostic when it shows characteristic rimmed vacuoles, with inflammatory change (the latter only in sporadic cases).[]

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