{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T14:18:13Z","timestamp":1784557093933,"version":"3.55.0"},"reference-count":26,"publisher":"Bioscientifica","issue":"3","license":[{"start":{"date-parts":[[2022,6,1]],"date-time":"2022-06-01T00:00:00Z","timestamp":1654041600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["etj.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,6,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Hashimoto\u2019s thyroiditis (HT) can be divided into IgG4 HT and non-IgG4 HT based on IgG4 and IgG immunohistochemical staining. In clinical practice, it is often necessary to identify diseases such as primary thyroid lymphoma (PTL) and IgG4 HT when a patient presents with a rapidly enlarged thyroid. The aim of our study was to uncover the differential points between the two diseases.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Clinical information from 19 IgG4 HT and 10 PTL patients was obtained from the patients\u2019 medical records, including age, sex, main clinical manifestation, thyroid functional status, the presence of serum anti-thyroid peroxidase antibodies, anti-thyroglobulin antibodies, and thyroid ultrasonography results. Thyroid sections from all patients were collected to detect IgG4 and IgG expression by immunohistochemical staining.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The IgG4 HT patients were significantly younger than those in the PTL group (39.68 \u00b1 10.95 vs 66.20 \u00b1 10.23 years,\n                      <jats:italic>P<\/jats:italic>\n                      &lt; 0.001). There were no significant differences in the sex distribution or TgAb- or TPOAb-positive rates. The PTL group had a higher prevalence of clinical hypothyroidism than the IgG4 HT group (\n                      <jats:italic>P<\/jats:italic>\n                      = 0.016). In the PTL group, thyroid lesions were more likely to exhibit hypoechogenicity (6\/6 vs 1\/19,\n                      <jats:italic>P<\/jats:italic>\n                      &lt; 0.001) on ultrasound images. In the PTL group, two patients met the immunohistochemical cut-off value of the criteria for IgG4 HT.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Simply relying on immunohistochemistry for IgG4 cannot diagnose IgG4 HT correctly when a patient presents with rapid thyroid enlargement. A combination of clinical and pathological analyses will help distinguish IgG4 HT from PTL which may be with abundant IgG4-positive plasma cells.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1530\/etj-21-0144","type":"journal-article","created":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T06:48:53Z","timestamp":1651819733000},"update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-16","source":"Crossref","is-referenced-by-count":8,"title":["Clinical differences between IgG4 Hashimoto\u2019s thyroiditis and primary thyroid lymphoma"],"prefix":"10.1530","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9485-6621","authenticated-orcid":true,"given":"Liyuan","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Endocrinology, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Endocrinology, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Ultrasound, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Endocrinology, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guizhi","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Endocrinology, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9156-9483","authenticated-orcid":true,"given":"Ying","family":"Gao","sequence":"additional","affiliation":[{"name":"Department of Endocrinology, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junqing","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Endocrinology, Peking University First Hospital, Beijing, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"416","reference":[{"key":"bib1","series-title":"Autoimmunity Reviews","first-page":"102649","article-title":"Hashimoto\u2019s thyroiditis: an update on pathogenic mechanisms, diagnostic protocols, therapeutic strategies, and potential malignant transformation","volume":"19","author":"Ralli","year":"2020","unstructured":"Ralli MAngeletti DFiore MD\u2019Aguanno VLambiase AArtico Mde Vincentiis MGreco A. 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