{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T01:34:02Z","timestamp":1777944842716,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2010,1,13]],"date-time":"2010-01-13T00:00:00Z","timestamp":1263340800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2010,1,13]],"date-time":"2010-01-13T00:00:00Z","timestamp":1263340800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ORL"],"abstract":"<jats:p>A rare case of extramedullary plasmacytoma in the sino-nasal cavity is presented. During a prolonged clinical course, the tumor has recurred several times after irradiation, chemotherapy and surgery, and presented in the clavicular bone as well. Immunohistochemical staining of each tumor showed IgA k phenotype, and immunoelectrophoresis of the serum showed overproduction of IgA with k light chains. Although an elevation of serum IgA persists, the patient has remained well without evidence of overt multiple myeloma.<\/jats:p>","DOI":"10.1159\/000276352","type":"journal-article","created":{"date-parts":[[2010,1,15]],"date-time":"2010-01-15T03:25:48Z","timestamp":1263525948000},"page":"45-48","source":"Crossref","is-referenced-by-count":1,"title":["Unusual Case of Plasma Cell Tumor with Monoclonal Gammopathy of the Sino-Nasal Cavity and Clavicular Bone"],"prefix":"10.1159","author":[{"given":"Takaki","family":"Miwa","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuyuki","family":"Kimura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akitaka","family":"Nonomura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michihiro","family":"Kamide","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsuru","family":"Furukawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2010,1,13]]},"container-title":["ORL"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000276352","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T08:26:22Z","timestamp":1777710382000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000276352"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,1,13]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000276352","archive":["Portico"],"relation":{},"ISSN":["0301-1569","1423-0275"],"issn-type":[{"value":"0301-1569","type":"print"},{"value":"1423-0275","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,1,13]]}}}