Background: To assess the ability of the 2021 European Academy of Neurology/Peripheral Nerve Society (EAN/PNS) clinical criteria for chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) to include within their classification the whole spectrum of clinical heterogeneity of the disease and to define the clinical characteristics of the unclassifiable clinical forms. Methods: The 2021 EAN/PNS clinical criteria for CIDP were applied to 329 patients fulfilling the electrodiagnostic (and in some cases also the supportive) criteria for the diagnosis of CIDP. Clinical characteristics were reviewed for each patient not strictly fulfilling the clinical criteria ('unclassifiable'). Results: At study inclusion, 124 (37.5%) patients had an unclassifiable clinical presentation, including 110 (89%) with a typical CIDP-like clinical phenotype in whom some segments of the four limbs were unaffected by weakness ('incomplete typical CIDP'), 10 (8%) with a mild distal, symmetric, sensory or sensorimotor polyneuropathy confined to the lower limbs with cranial nerve involvement ('cranial nerve predominant CIDP') and 4 (1%) with a symmetric sensorimotor polyneuropathy limited to the proximal and distal areas of the lower limbs ('paraparetic CIDP'). Eighty-one (65%) patients maintained an unclassifiable presentation during the entire disease follow-up while 13 patients progressed to typical CIDP. Patients with the unclassifiable clinical forms compared with patients with typical CIDP had a milder form of CIDP, while there was no difference in the distribution patterns of demyelination. Conclusions: A proportion of patients with CIDP do not strictly fulfil the 2021 EAN/PNS clinical criteria for diagnosis. These unclassifiable clinical phenotypes may pose diagnostic challenges and thus deserve more attention in clinical practice and research.

Unclassified clinical presentations of chronic inflammatory demyelinating polyradiculoneuropathy / Doneddu, Pietro Emiliano; Akyil, Houseyin; Manganelli, Fiore; Briani, Chiara; Cocito, Dario; Benedetti, Luana; Mazzeo, Anna; Fazio, Raffaella; Filosto, Massimiliano; Cosentino, Giuseppe; Di Stefano, Vincenzo; Antonini, Giovanni; Marfia, Girolama Alessandra; Inghilleri, Maurizio; Siciliano, Gabriele; Clerici, Angelo Maurizio; Carpo, Marinella; Schenone, Angelo; Luigetti, Marco; Lauria, Giuseppe; Matà, Sabrina; Rosso, Tiziana; Minicuci, Giacomo Maria; Lucchetta, Marta; Cavaletti, Guido; Liberatore, Giuseppe; Spina, Emanuele; Campagnolo, Marta; Peci, Erdita; Germano, Francesco; Gentile, Luca; Strano, Camilla; Cotti Piccinelli, Stefano; Vegezzi, Elisa; Leonardi, Luca; Mataluni, Giorgia; Ceccanti, Marco; Schirinzi, Erika; Romozzi, Marina; Nobile-Orazio, Eduardo. - In: JOURNAL OF NEUROLOGY, NEUROSURGERY AND PSYCHIATRY. - ISSN 0022-3050. - (2023). [10.1136/jnnp-2022-331011]

Unclassified clinical presentations of chronic inflammatory demyelinating polyradiculoneuropathy

Antonini, Giovanni;Inghilleri, Maurizio;Leonardi, Luca;Ceccanti, Marco;
2023

Abstract

Background: To assess the ability of the 2021 European Academy of Neurology/Peripheral Nerve Society (EAN/PNS) clinical criteria for chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) to include within their classification the whole spectrum of clinical heterogeneity of the disease and to define the clinical characteristics of the unclassifiable clinical forms. Methods: The 2021 EAN/PNS clinical criteria for CIDP were applied to 329 patients fulfilling the electrodiagnostic (and in some cases also the supportive) criteria for the diagnosis of CIDP. Clinical characteristics were reviewed for each patient not strictly fulfilling the clinical criteria ('unclassifiable'). Results: At study inclusion, 124 (37.5%) patients had an unclassifiable clinical presentation, including 110 (89%) with a typical CIDP-like clinical phenotype in whom some segments of the four limbs were unaffected by weakness ('incomplete typical CIDP'), 10 (8%) with a mild distal, symmetric, sensory or sensorimotor polyneuropathy confined to the lower limbs with cranial nerve involvement ('cranial nerve predominant CIDP') and 4 (1%) with a symmetric sensorimotor polyneuropathy limited to the proximal and distal areas of the lower limbs ('paraparetic CIDP'). Eighty-one (65%) patients maintained an unclassifiable presentation during the entire disease follow-up while 13 patients progressed to typical CIDP. Patients with the unclassifiable clinical forms compared with patients with typical CIDP had a milder form of CIDP, while there was no difference in the distribution patterns of demyelination. Conclusions: A proportion of patients with CIDP do not strictly fulfil the 2021 EAN/PNS clinical criteria for diagnosis. These unclassifiable clinical phenotypes may pose diagnostic challenges and thus deserve more attention in clinical practice and research.
2023
NEUROIMMUNOLOGY; NEUROMUSCULAR; NEUROPATHY
01 Pubblicazione su rivista::01a Articolo in rivista
Unclassified clinical presentations of chronic inflammatory demyelinating polyradiculoneuropathy / Doneddu, Pietro Emiliano; Akyil, Houseyin; Manganelli, Fiore; Briani, Chiara; Cocito, Dario; Benedetti, Luana; Mazzeo, Anna; Fazio, Raffaella; Filosto, Massimiliano; Cosentino, Giuseppe; Di Stefano, Vincenzo; Antonini, Giovanni; Marfia, Girolama Alessandra; Inghilleri, Maurizio; Siciliano, Gabriele; Clerici, Angelo Maurizio; Carpo, Marinella; Schenone, Angelo; Luigetti, Marco; Lauria, Giuseppe; Matà, Sabrina; Rosso, Tiziana; Minicuci, Giacomo Maria; Lucchetta, Marta; Cavaletti, Guido; Liberatore, Giuseppe; Spina, Emanuele; Campagnolo, Marta; Peci, Erdita; Germano, Francesco; Gentile, Luca; Strano, Camilla; Cotti Piccinelli, Stefano; Vegezzi, Elisa; Leonardi, Luca; Mataluni, Giorgia; Ceccanti, Marco; Schirinzi, Erika; Romozzi, Marina; Nobile-Orazio, Eduardo. - In: JOURNAL OF NEUROLOGY, NEUROSURGERY AND PSYCHIATRY. - ISSN 0022-3050. - (2023). [10.1136/jnnp-2022-331011]
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