{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T10:03:20Z","timestamp":1777716200676,"version":"3.51.4"},"reference-count":21,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2009,4,15]],"date-time":"2009-04-15T00:00:00Z","timestamp":1239753600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Int J Surg Pathol"],"published-print":{"date-parts":[[2011,4]]},"abstract":"<jats:p>This study reports 2 cases of IgG4-related disorder of the retroperitoneum resembling plasma cell type of Castleman\u2019s disease. A single lesion was located in the renal hilum and ureter, respectively, in these 2 cases. Histologically, both lesions were characterized by reactive follicular hyperplasia with active germinal centers and a sheet of polyclonal mature plasma cells in the interfollicular area. The prominent sclerosis and\/or fibrosis, which were characteristic histological findings of IgG4-related disorders, were absent. However, immunohistochemical study demonstrated numerous IgG4+ plasma cells accounting for more than 50% of IgG+ cells. The phlebitis that occurs with early lesions of obliterative phlebitis is one of the characteristic histological findings of IgG4-related disorders and was noted in one case. Serum IgG4 concentration was increased in one case. The serum interleukin-6 level was within the normal range in one case that was examined. From a therapeutic perspective, it is important to discriminate IgG4-related disorder from plasma cell type of Castleman\u2019s disease.<\/jats:p>","DOI":"10.1177\/1066896909331996","type":"journal-article","created":{"date-parts":[[2009,4,16]],"date-time":"2009-04-16T20:12:55Z","timestamp":1239912775000},"page":"220-224","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["IgG4-Related Disorder of the Retroperitoneum Resembling Castleman\u2019s Disease Plasma Cell Type: A Report of 2 Cases"],"prefix":"10.1177","volume":"19","author":[{"given":"Masaru","family":"Kojima","sequence":"first","affiliation":[{"name":"Department of Pathology and Clinical Laboratories, Gunma Cancer Center Hospital, Ohta,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naoya","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Pathology, Tokai University School of Medicine, Isehara"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tadashi","family":"Motoori","sequence":"additional","affiliation":[{"name":"Department of Pathology, Kitasato University, Kitasato Institute Medical Center Hospital, Kitamoto"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ken","family":"Shimizu","sequence":"additional","affiliation":[{"name":"Department of Pathology, Saitama Social Insurance Hospital, Saitama"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joji","family":"Haratake","sequence":"additional","affiliation":[{"name":"Department of Pathology and Clinical Laboratories, Saiseikai Yahata Hospital, Kitakyushu"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shigeo","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Pathology and Clinical Laboratories, Nagoya University School of Medicine, Nagoya, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2009,4,15]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(195607\/08)9:4<822::AID-CNCR2820090430>3.0.CO;2-4"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(197203)29:3<670::AID-CNCR2820290321>3.0.CO;2-#"},{"key":"atypb3","volume-title":"Ioachim\u2019s lymph node pathology","author":"Ioachim HL","year":"2002","edition":"3"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-200308000-00009"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1097\/01.pas.0000136449.37936.6c"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1097\/01.pas.0000213445.08902.11"},{"key":"atypb7","author":"Masaki Y.","year":"2008","journal-title":"Ann Rheum Dis."},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1136\/jcp.43.11.888"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-97187-7"},{"key":"atypb10","unstructured":"Rosai J. 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