{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T23:36:40Z","timestamp":1768433800649,"version":"3.49.0"},"reference-count":31,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"6","license":[{"start":{"date-parts":[[2014,1,1]],"date-time":"2014-01-01T00:00:00Z","timestamp":1388534400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2014,3,18]],"date-time":"2014-03-18T00:00:00Z","timestamp":1395100800000},"content-version":"vor","delay-in-days":76,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0\/"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>INTRODUCTION:<\/jats:title>\n                    <jats:p>Breast tumor metastasis to the tonsil is extremely rare.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>PRESENTATION OF CASE:<\/jats:title>\n                    <jats:p>\n                      A 54-year-old woman underwent resection of a breast malignant phyllodes tumor and later presented with metastasis to the lung and the left tonsil. She underwent left lower lobectomy and resection of the left tonsillar tumor. She subsequently developed undifferentiated carcinoma of the right tonsil. She underwent resection of the right tonsillar tumor and chemotherapy was started. The central venous catheter became infected with methicillin-resistant\n                      <jats:italic toggle=\"yes\">Staphylococcus aureus<\/jats:italic>\n                      . Finally, she died.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>DISCUSSION:<\/jats:title>\n                    <jats:p>To the best of our knowledge, this is the first reported case of a phyllodes tumor metastasizing to the tonsil. Furthermore, morphological and immunohistochemical study revealed that the right tonsillar tumor was irrelevant to the phyllodes tumors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION:<\/jats:title>\n                    <jats:p>We report a case of phyllodes tumor metastasis to the left tonsil which developed undifferentiated carcinoma in the other side of tonsil later. Breast tumor metastasis to the tonsil is rare but it should be considered as a possible diagnosis.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.ijscr.2014.03.014","type":"journal-article","created":{"date-parts":[[2014,3,25]],"date-time":"2014-03-25T13:36:27Z","timestamp":1395754587000},"page":"290-293","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":6,"title":["Phyllodes tumor metastasis to the tonsil with synchronous undifferentiated carcinoma"],"prefix":"10.1097","volume":"5","author":[{"given":"Rui","family":"Sano","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eisuke","family":"Sato","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tetsuya","family":"Watanabe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hisakazu","family":"Oshima","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsushi","family":"Ando","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michihiro","family":"Masaki","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsutomu","family":"Nakashima","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"R1-2-20260114","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1016\/S0030-6665(20)32491-9","article-title":"Oral pathology","volume":"12","author":"Crawford","year":"1979","journal-title":"Otolaryngol Clin North Am"},{"key":"R2-2-20260114","doi-asserted-by":"crossref","first-page":"236","DOI":"10.1017\/S0022215100129780","article-title":"Metastatic melanoma of the tonsil and the nasopharynx","volume":"109","author":"Ramamurthy","year":"1995","journal-title":"J Laryngol Otol"},{"key":"R3-2-20260114","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1097\/00005537-199603000-00013","article-title":"Malignant melanoma metastatic to the tonsil","volume":"106","author":"Aydogan","year":"1996","journal-title":"Laryngoscope"},{"key":"R4-2-20260114","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1002\/hed.2880140112","article-title":"Bilateral tonsillar metastasis of gastric adenocarcinoma","volume":"14","author":"Gallo","year":"1992","journal-title":"Head Neck"},{"key":"R5-2-20260114","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1017\/S0022215100133468","article-title":"Tonsillar metastasis from adenocarcinoma of the stomach","volume":"110","author":"Benito","year":"1996","journal-title":"J Laryngol Otol"},{"key":"R6-2-20260114","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1177\/000348947908800215","article-title":"Hyper-nephroma metastatic to the palatine tonsils","volume":"88","author":"Brownson","year":"1979","journal-title":"Ann Otol Rhinol Laryngol"},{"key":"R8-2-20260114","doi-asserted-by":"crossref","first-page":"688","DOI":"10.1177\/014107688908201122","article-title":"Tonsillar metastasis at presentation of small cell-carcinoma of the lung","volume":"82","author":"Seddon","year":"1989","journal-title":"J R Soc Med"},{"key":"R9-2-20260114","doi-asserted-by":"crossref","first-page":"684","DOI":"10.1016\/S0194-5998(97)70250-X","article-title":"Metastatic malignant mesothelioma to the tonsil","volume":"116","author":"Hefer","year":"1997","journal-title":"Otolaryngol Head Neck Surg"},{"key":"R10-2-20260114","doi-asserted-by":"crossref","first-page":"717","DOI":"10.1902\/jop.1996.67.7.717","article-title":"Hepatocellular carcinomas diagnosed following metastasis to the oral cavity. 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