{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T23:38:12Z","timestamp":1792798692774,"version":"4.5.0"},"reference-count":37,"publisher":"BMJ","issue":"9","funder":[{"DOI":"10.13039\/501100001700","name":"The ministry of Education, Culture, Sports, Science and Technology of Japan","doi-asserted-by":"crossref","award":["17K09777"],"award-info":[{"award-number":["17K09777"]}],"id":[{"id":"10.13039\/501100001700","id-type":"DOI","asserted-by":"crossref"}]},{"name":"The Ministry of Health, Labor and Welfare of Japan","award":["H29-022"],"award-info":[{"award-number":["H29-022"]}],"id":[{"id":"https:\/\/ror.org\/03mwa7s65","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["J Neurol Neurosurg Psychiatry"],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To evaluate the clinical and pathological correlations characterising each clinical subtype of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We assessed 106 consecutive patients who had CIDP fulfilling the European Federation of Neurological Societies and Peripheral Nerve Society criteria and had been referred for sural nerve biopsy. Patients with anti-neurofascin 155, anti-contactin 1 and anti-LM1 antibodies were excluded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>55 patients were classified as having typical CIDP. Regarding atypical CIDP, the multifocal acquired demyelinating sensory and motor (MADSAM) (n=15), distal acquired demyelinating symmetric (DADS) (n=16) and pure sensory (n=15) forms were major subtypes, while the pure motor (n=4) and focal (n=1) forms were rare. Nerve conduction studies revealed that distal motor latencies and F-wave latencies were markedly prolonged in the typical CIDP group but relatively preserved in the MADSAM group. Motor conduction velocity was conspicuously slowed in the DADS group, and distal motor latencies were markedly prolonged in the pure sensory group. Sural nerve biopsy specimens from patients with MADSAM, DADS and pure sensory type tended to show extreme variation in myelinated fibre density among fascicles due to focal myelinated fibre loss or onion-bulb formation, whereas patients with typical CIDP tended to show mild fascicular variation. Epineurial lymphocytic infiltration was conspicuous in cases with marked fascicular variation in myelinated fibre density.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Preferential involvement of distal and proximal segments and uniform pathological features in typical CIDP indicate a role of humoral factors at sites where the blood\u2013nerve barrier is deficient. By contrast, focal lesions in MADSAM, DADS and pure sensory forms may share neuropathic mechanisms primarily affecting the nerve trunk.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/jnnp-2019-320741","type":"journal-article","created":{"date-parts":[[2019,6,21]],"date-time":"2019-06-21T17:19:35Z","timestamp":1561137575000},"page":"988-996","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":74,"title":["Clinicopathological characteristics of subtypes of chronic inflammatory demyelinating 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