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Examination and imaging revealed a unilateral polyp arising from the skull base. She underwent endoscopic polypectomy with the histology demonstrating tumour-to-tumour metastasis from a breast carcinoma to an olfactory neuroblastoma, a rare sinonasal tumour. Clinicians should be cautious of distant metastases in any patient presenting with head and neck symptoms and a known primary tumour. This is the first documented case of this type.<\/jats:p>","DOI":"10.1308\/rcsann.2020.0038","type":"journal-article","created":{"date-parts":[[2020,5,6]],"date-time":"2020-05-06T10:31:15Z","timestamp":1588761075000},"page":"e118-e121","source":"Crossref","is-referenced-by-count":3,"title":["Tumour-to-tumour metastasis: breast carcinoma to an olfactory neuroblastoma"],"prefix":"10.1308","volume":"102","author":[{"given":"A","family":"Bashyam","sequence":"first","affiliation":[{"name":"Ear, Nose and Throat Department, Royal Surrey County Hospital, Guildford, Surrey, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V","family":"Grammatopoulou","sequence":"additional","affiliation":[{"name":"Ear, Nose and Throat Department, Royal Surrey County Hospital, Guildford, Surrey, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T","family":"Crook","sequence":"additional","affiliation":[{"name":"Oncology Department, Royal Surrey County Hospital, Guildford, Surrey, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S","family":"Di Palma","sequence":"additional","affiliation":[{"name":"Histopathology Department, Royal Surrey County Hospital, Guildford, Surrey, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"VS","family":"Sunkaraneni","sequence":"additional","affiliation":[{"name":"Ear, Nose and Throat Department, Royal Surrey County Hospital, Guildford, Surrey, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"171","reference":[{"key":"bib1","first-page":"410","volume":"13","author":"Berger L","year":"1924","journal-title":"Bull Assoc Fr Etude Cancer"},{"key":"bib2","doi-asserted-by":"publisher","DOI":"10.1007\/s12105-009-0125-2"},{"key":"bib3","first-page":"451086","volume":"2011","author":"Tural D","year":"2011","journal-title":"ISRN Oncol"},{"key":"bib4","doi-asserted-by":"publisher","DOI":"10.1007\/BF00050693"},{"key":"bib5","doi-asserted-by":"publisher","DOI":"10.1007\/s12105-016-0768-8"},{"key":"bib6","doi-asserted-by":"publisher","DOI":"10.1002\/hed.24502"},{"key":"bib7","doi-asserted-by":"publisher","DOI":"10.1007\/s12105-009-0123-4"},{"key":"bib8","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(196809)22:3<635::AID-CNCR2820220320>3.0.CO;2-O"},{"key":"bib9","doi-asserted-by":"publisher","DOI":"10.21037\/jtd.2016.03.79"},{"key":"bib10","doi-asserted-by":"crossref","first-page":"CNS09","DOI":"10.2217\/cns-2017-0022","volume":"7","author":"Pham JT","year":"2018","journal-title":"CNS Oncol"}],"updated-by":[{"DOI":"10.1308\/rcsann.2020.0038","type":"expression_of_concern","label":"Expression of concern","source":"retraction-watch","updated":{"date-parts":[[2022,3,23]],"date-time":"2022-03-23T00:00:00Z","timestamp":1647993600000},"record-id":"36305"}],"container-title":["The Annals of The Royal College of Surgeons of England"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/publishing.rcseng.ac.uk\/doi\/pdf\/10.1308\/rcsann.2020.0038","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,5,15]],"date-time":"2023-05-15T06:13:11Z","timestamp":1684131191000},"score":1,"resource":{"primary":{"URL":"https:\/\/publishing.rcseng.ac.uk\/doi\/10.1308\/rcsann.2020.0038"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,7]]},"references-count":10,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2020,7]]}},"alternative-id":["10.1308\/rcsann.2020.0038"],"URL":"https:\/\/doi.org\/10.1308\/rcsann.2020.0038","relation":{},"ISSN":["0035-8843","1478-7083"],"issn-type":[{"value":"0035-8843","type":"print"},{"value":"1478-7083","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,7]]}}}