{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T16:55:20Z","timestamp":1789750520168,"version":"4.0.1"},"reference-count":10,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2025,4,14]],"date-time":"2025-04-14T00:00:00Z","timestamp":1744588800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cytopathology"],"published-print":{"date-parts":[[2025,9]]},"abstract":"ABSTRACT<\/jats:title>\n \n Introduction<\/jats:title>\n Hepatoid adenocarcinoma was described in the 1980s, but clear\u2010cut criteria for diagnosis were not settled until the 1990s. Diagnosis was initially based on the increase of serum alpha\u2010fetoprotein associated with the tumour, but with time, it was shown that some lesions with morphological and immunohistochemical features of hepatoid adenocarcinoma were not associated with alpha\u2010fetoprotein elevation and this is no longer required for diagnosis. Recent systematic reviews have described less than 70 cases of primary hepatoid adenocarcinoma of the lung, and most of these cases were diagnosed by biopsy.<\/jats:p>\n <\/jats:sec>\n \n Case Presentation<\/jats:title>\n We herein report the case of a 67\u2010year\u2010old man diagnosed with primary lung hepatoid adenocarcinoma by cytology, emphasising the cytological features that should lead to suspecting this diagnosis.<\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n Very few reports have described the cytological features of this neoplasm, but it is important to define and recognise them as cytology is in many cases the only available sample to diagnose and manage patients with lung neoplasms. Besides, hepatoid adenocarcinoma seems to be resistant to conventional therapy and it is essential to recognise it and avoid confusion with other tumour types.<\/jats:p>\n <\/jats:sec>","DOI":"10.1111\/cyt.13494","type":"journal-article","created":{"date-parts":[[2025,4,14]],"date-time":"2025-04-14T23:31:12Z","timestamp":1744673472000},"page":"512-515","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Primary Hepatoid Adenocarcinoma of the Lung: Clues for Cytological Diagnosis"],"prefix":"10.1111","volume":"36","author":[{"given":"M. J.","family":"Fern\u00e1ndez Ace\u00f1ero","sequence":"first","affiliation":[{"name":"Universidad Complutense de Madrid Madrid Spain"},{"name":"Department of Surgical Pathology Hospital Cl\u00ednico San Carlos Madrid Spain"},{"name":"Instituto de Investigaci\u00f3n Hospital Cl\u00ednico San Carlos (IDCSC) Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.","family":"Acedo","sequence":"additional","affiliation":[{"name":"Department of Surgical Pathology Hospital Cl\u00ednico San Carlos Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Barreiro","sequence":"additional","affiliation":[{"name":"Department of Surgical Pathology Hospital Cl\u00ednico San Carlos Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Negueruela","sequence":"additional","affiliation":[{"name":"Hospital del Sureste, Arganda del Rey Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Nielsen","sequence":"additional","affiliation":[{"name":"Hospital del Sureste, Arganda del Rey Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,4,14]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.canlet.2023.216104"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.3389\/fonc.2021.633916"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.3389\/fonc.2021.702216"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.2147\/OTT.S364465"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.3390\/jcm12041411"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/dc.24195"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/modpathol.2013.170"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00428-020-02995-2"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jtho.2019.04.032"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.4103\/IJPM.IJPM_334_20"}],"container-title":["Cytopathology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/cyt.13494","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T13:47:12Z","timestamp":1764596832000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/cyt.13494"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,14]]},"references-count":10,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2025,9]]}},"alternative-id":["10.1111\/cyt.13494"],"URL":"https:\/\/doi.org\/10.1111\/cyt.13494","archive":["Portico"],"relation":{},"ISSN":["0956-5507","1365-2303"],"issn-type":[{"value":"0956-5507","type":"print"},{"value":"1365-2303","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,14]]},"assertion":[{"value":"2025-01-17","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-03-26","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-04-14","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}