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        <datestamp>2024-12-27T09:02:47Z</datestamp>
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          <dc:title xml:lang="ja">組織生検で診断に至ったIgG4関連後腹膜線維症の1例</dc:title>
          <dcterms:alternative xml:lang="en">A case of IgG4-related retroperitoneal fibrosis diagnosed by tissue biopsy</dcterms:alternative>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">中田, 敬</jpcoar:creatorName>
            <jpcoar:creatorAlternative xml:lang="en">Nakada, Kei</jpcoar:creatorAlternative>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">熊谷, 伸</jpcoar:creatorName>
            <jpcoar:creatorAlternative xml:lang="en">Kumagai, Shin</jpcoar:creatorAlternative>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">村木, 修</jpcoar:creatorName>
            <jpcoar:creatorAlternative xml:lang="en">Muraki, Osamu</jpcoar:creatorAlternative>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">鈴木, 修三</jpcoar:creatorName>
            <jpcoar:creatorAlternative xml:lang="en">Suzuki, Shuzo</jpcoar:creatorAlternative>
          </jpcoar:creator>
          <dc:rights xml:lang="ja">© 2022 福島医学会</dc:rights>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">IgG4関連後腹膜線維症</jpcoar:subject>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">IgG4関連疾患</jpcoar:subject>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">後腹膜線維症</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">IgG4-related retroperitoneal fibrosis</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">IgG4-related disease</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">retroperitoneal fibrosis</jpcoar:subject>
          <datacite:description xml:lang="ja" descriptionType="Abstract">症例は82歳男性。2020年12月，右腰背部痛を主訴に近医受診。腹部CTにて右腎門部に不整形腫瘤を認め精査加療目的に当科に紹介された。当科で施行した腹部CT，逆行性腎盂造影，および尿細胞診で腎あるいは尿路由来の悪性疾患の診断には至らなかったことから，後腹膜線維症が疑われた。血清IgGおよびIgG4の高値を認めたため，診断確定をするためにエコーガイド下生検を施行した。病理組織ではびまん性のリンパ球集簇と線維化が見られた。またIgG4陽性形質細胞の浸潤を認め，IgG4/IgG陽性細胞比が40%以上に増加していたことからIgG4関連後腹膜線維症と診断した。プレドニゾロン20 mg/dayの投与を行ったところ，右腎門部腫瘤の縮小と血清IgG4値の低下を認めた。</datacite:description>
          <datacite:description xml:lang="en" descriptionType="Abstract">An 82-year-old man presented to our department in December 2020 with a complaint of right lumbar back pain. An abdominal computed tomography showed an irregular mass at the right renal hilum. The abdominal CT, retrograde pyelography, and urine cytology did not reveal a renal or urinary tract malignancy, and retroperitoneal fibrosis was also suspected. An echo-guided biopsy was performed to confirm the diagnosis because of high levels of serum IgG and IgG4. The histopathological specimens showed diffuse lymphocyte aggregation and fibrosis. The patient was diagnosed as having IgG4-related retroperitoneal fibrosis because the IgG4/IgG-positive cell ratio increased to 40 or more. After treatment with prednisolone 20 mg/day, the right hilar mass shrank and the serum IgG4 level decreased.</datacite:description>
          <dc:publisher xml:lang="ja">福島医学会</dc:publisher>
          <datacite:date dateType="Issued">2022</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">journal article</dc:type>
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            <jpcoar:relatedIdentifier identifierType="DOI">https://doi.org/10.5387/fmedj.72.2_65</jpcoar:relatedIdentifier>
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            <jpcoar:relatedIdentifier identifierType="ICHUSHI">2022344116</jpcoar:relatedIdentifier>
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          <jpcoar:sourceIdentifier identifierType="PISSN">0016-2582</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="EISSN">2436-7826</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="NCID">AN00216776</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle xml:lang="ja">福島医学雑誌</jpcoar:sourceTitle>
          <jpcoar:volume>72</jpcoar:volume>
          <jpcoar:issue>2</jpcoar:issue>
          <jpcoar:pageStart>65</jpcoar:pageStart>
          <jpcoar:pageEnd>71</jpcoar:pageEnd>
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