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Her extensive non-invasive screening for immunological disease and radiological investigations for occult malignancy were unremarkable. The patient received intravenous methylprednisolone and intravenous rituximab induction therapy resulting in complete remission of both the idiopathic membranous nephropathy and small vessel vasculitis at 7 months post treatment.<\/jats:p>","DOI":"10.1136\/bcr-2023-257762","type":"journal-article","created":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T12:00:33Z","timestamp":1709208033000},"page":"e257762","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Idiopathic membranous nephropathy and synchronous mononeuritis multiplex secondary to idiopathic small vessel vasculitis"],"prefix":"10.1136","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8214-5021","authenticated-orcid":false,"given":"Kalpa","family":"Jayanatha","sequence":"first","affiliation":[{"name":"Medicine, The University of Auckland, Auckland, New Zealand"},{"name":"Renal Medicine, Middlemore Hospital, Auckland, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ashutosh","family":"Kumar","sequence":"additional","affiliation":[{"name":"Renal Medicine, Middlemore Hospital, Auckland, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark","family":"Sapsford","sequence":"additional","affiliation":[{"name":"Rheumatology, Middlemore Hospital, Auckland, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark","family":"Simpson","sequence":"additional","affiliation":[{"name":"Neurology, Auckland City Hospital, Auckland, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2024,2,29]]},"reference":[{"key":"2025082804025918000_17.2.e257762.1","first-page":"463","volume-title":"Handbook of Clinical Neurology","volume":"115","author":"Vrancken","year":"2013"},{"key":"2025082804025918000_17.2.e257762.2","doi-asserted-by":"publisher","DOI":"10.1016\/0049-0172(81)90100-1"},{"key":"2025082804025918000_17.2.e257762.3","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9343(81)90194-7"},{"key":"2025082804025918000_17.2.e257762.4","unstructured":"Salmon A , Jayanatha K . 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