{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,2]],"date-time":"2026-11-02T01:26:40Z","timestamp":1793582800081,"version":"4.5.0"},"reference-count":17,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Diagnostic Cytopathology"],"published-print":{"date-parts":[[2026,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Endosalpingiosis is a benign M\u00fcllerian inclusion that rarely involves supradiaphragmatic lymph nodes. Malignant transformation in the setting of nodal endosalpingiosis is exceptional. We report a case of low\u2010grade serous carcinoma arising in a cervical lymph node in the setting of endosalpingiosis in a 41\u2010year\u2010old woman presenting with Horner syndrome. Imaging revealed a densely calcified, hypermetabolic supraclavicular lymph node. Fine needle aspiration and core biopsy demonstrated tubal\u2010type epithelium consistent with endosalpingiosis adjacent to a neoplastic micropapillary and cribriform proliferation with psammoma bodies. Immunohistochemistry showed positive staining for PAX\u20108, estrogen receptor, and WT1, supporting M\u00fcllerian origin. The patient had a remote history of serous borderline tumor with noninvasive implants and\n                    <jats:italic>KRAS<\/jats:italic>\n                    and\n                    <jats:italic>MAPK1<\/jats:italic>\n                    mutations. No recurrent pelvic disease was identified on positron emission tomography\u2013computed tomography. Neck dissection confirmed low\u2010grade serous carcinoma arising in association with nodal endosalpingiosis. This rare presentation underscores the importance of recognizing M\u00fcllerian proliferations in cervical nodes to avoid misdiagnosis as metastatic carcinoma.\n                  <\/jats:p>","DOI":"10.1002\/dc.70206","type":"journal-article","created":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T06:33:00Z","timestamp":1788330780000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Low\u2010Grade Serous Carcinoma in Association With Endosalpingiosis in a Cervical Lymph Node: A Case Report and Literature Review"],"prefix":"10.1002","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3408-978X","authenticated-orcid":false,"given":"Nyein Nyein","family":"Htun","sequence":"first","affiliation":[{"name":"Department of Pathology The University of Texas MD Anderson Cancer Center  Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5023-2035","authenticated-orcid":false,"given":"Nour","family":"Sneige","sequence":"additional","affiliation":[{"name":"Department of Pathology The University of Texas MD Anderson Cancer Center  Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,1]]},"reference":[{"key":"e_1_2_10_2_1","volume-title":"StatPearls","author":"Krupa K. 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