{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T07:51:41Z","timestamp":1758959501859,"version":"3.37.3"},"reference-count":24,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2017,2,24]],"date-time":"2017-02-24T00:00:00Z","timestamp":1487894400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JSPS KAKENHI Grant Number JP16K08666"],"award-info":[{"award-number":["JSPS KAKENHI Grant Number JP16K08666"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostic Cytopathology"],"published-print":{"date-parts":[[2017,6]]},"abstract":"<jats:p>We herein report a case of primary parotid extranodal marginal zone lymphoma of mucosa\u2010associated lymphoid tissue (MALT lymphoma) with Dutcher bodies. An 82\u2010year\u2010old man presented with a 4 cm \u00d7 2.5 cm mass in the left parotid region. Positron emission tomography\/computed tomography (PET\/CT) showed localized abnormal fluorodeoxyglucose (FDG) uptake in the left parotid gland and lymph nodes of the left cervical region. Fine needle aspiration (FNA) cytology of the left parotid gland showed lymphoplasmacytoid cells with periodic acid\u2010Schiff (PAS)\u2010positive Dutcher bodies. A subsequent excisional biopsy showed sheets of small\u2010 to medium\u2010sized neoplastic B cells with abundant IgM in the cytoplasm as detected by immunohistochemistry. A diagnosis of stage II MALT lymphoma was made, but the patient did not receive therapeutic intervention. As previously reported, Dutcher bodies are mainly observed in B\u2010cell neoplasms with IgM production. Because these characteristic intranuclear inclusions can be easily observed by PAS staining, the presence of PAS reaction\u2010positive Dutcher bodies in FNA cytology can serve as a clue to differentially diagnose MALT lymphoma from plasmacytoma. Diagn. Cytopathol. 2017;45:547\u2013551. \u00a9 2017 Wiley Periodicals, Inc.<\/jats:p>","DOI":"10.1002\/dc.23691","type":"journal-article","created":{"date-parts":[[2017,2,24]],"date-time":"2017-02-24T14:58:03Z","timestamp":1487948283000},"page":"547-551","source":"Crossref","is-referenced-by-count":4,"title":["Extranodal marginal zone B\u2010cell lymphoma of mucosa\u2010associated lymphoid tissue with plasma cell differentiation: Periodic acid\u2010schiff reaction\u2010positive Dutcher body is a diagnostic clue to distinguish it from plasmacytoma"],"prefix":"10.1002","volume":"45","author":[{"given":"Atsuko","family":"Nasu","sequence":"first","affiliation":[{"name":"Department of Diagnostic Pathology Okayama University Hospital Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuro","family":"Igawa","sequence":"additional","affiliation":[{"name":"Department of Pathology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiaki","family":"Sato","sequence":"additional","affiliation":[{"name":"Division of Pathophysiology Okayama University Graduate School of Health Sciences Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyuki","family":"Yanai","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Pathology Okayama University Hospital Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tadashi","family":"Yoshino","sequence":"additional","affiliation":[{"name":"Department of Pathology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5234-6861","authenticated-orcid":false,"given":"Yasuharu","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Pathology Okayama University Graduate 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