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Initial biopsy taken was inconclusive and patient underwent a transcervical complete excision of the tumour, where histopathological analysis confirmed the diagnosis of monophasic synovial sarcoma of the left pyriform fossa. This patient also received adjuvant radiotherapy postoperatively and remained disease free 1\u2009year after completion of treatment.<\/jats:p>","DOI":"10.1136\/bcr-2020-236204","type":"journal-article","created":{"date-parts":[[2020,11,30]],"date-time":"2020-11-30T15:45:32Z","timestamp":1606751132000},"page":"e236204","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Monophasic synovial sarcoma of the pyriform fossa"],"prefix":"10.1136","volume":"13","author":[{"given":"Chun Tau","family":"Ng","sequence":"first","affiliation":[{"name":"Department of Otorhinolaryngology, Queen Elizabeth Hospital, Kota Kinabalu, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7780-2616","authenticated-orcid":false,"given":"Eugene Hung Chih","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Surgery, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Narayanan","family":"Prepageran","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, University of Malaya, Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2020,11,30]]},"reference":[{"key":"2025082802504914000_13.11.e236204.1","doi-asserted-by":"publisher","DOI":"10.1097\/01.mph.0000161762.53175.e4"},{"key":"2025082802504914000_13.11.e236204.2","doi-asserted-by":"publisher","DOI":"10.1016\/j.anndiagpath.2014.09.002"},{"key":"2025082802504914000_13.11.e236204.3","doi-asserted-by":"publisher","DOI":"10.1016\/S1092-9134(98)80042-7"},{"key":"2025082802504914000_13.11.e236204.4","doi-asserted-by":"crossref","first-page":"3794","DOI":"10.1200\/JCO.2000.18.22.3794","article-title":"Synovial sarcoma: a clinicopathologic, staging, and prognostic assessment","volume":"18","author":"Spillane","year":"2000","journal-title":"J Clin Oncol"},{"key":"2025082802504914000_13.11.e236204.5","doi-asserted-by":"publisher","DOI":"10.1097\/00001622-200305000-00011"},{"key":"2025082802504914000_13.11.e236204.6","doi-asserted-by":"crossref","first-page":"731","DOI":"10.1002\/hed.20564","article-title":"Survival in patients with synovial sarcoma of the head and neck: association with tumor location, size, and extension","volume":"29","author":"Harb","year":"2007","journal-title":"Head Neck"},{"key":"2025082802504914000_13.11.e236204.7","doi-asserted-by":"crossref","first-page":"592","DOI":"10.1016\/j.jormas.2020.02.005","article-title":"Biphasic synovial sarcoma with extensive calcification in the temporomandibular joint region: a rare case report and literature review","volume":"121","author":"Xia","year":"2020","journal-title":"J Stomatol Oral Maxillofac Surg"},{"key":"2025082802504914000_13.11.e236204.8","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1007\/s12070-018-1418-0","article-title":"Monophasic synovial sarcoma of tongue: a rarest of rare case scenario","volume":"71","author":"Sharma","year":"2019","journal-title":"Indian J Otolaryngol Head Neck Surg"},{"key":"2025082802504914000_13.11.e236204.9","doi-asserted-by":"crossref","DOI":"10.1186\/s12903-019-0961-8","article-title":"Synovial sarcoma of the floor of the mouth: a rare case report","volume":"20","author":"Wang","year":"2020","journal-title":"BMC Oral Health"},{"key":"2025082802504914000_13.11.e236204.10","doi-asserted-by":"crossref","first-page":"617","DOI":"10.1016\/j.anl.2017.06.007","article-title":"Biphasic synovial sarcoma of the epiglottis: case report and literature review","volume":"45","author":"Wigand","year":"2018","journal-title":"Auris Nasus Larynx"},{"key":"2025082802504914000_13.11.e236204.11","doi-asserted-by":"crossref","first-page":"458","DOI":"10.1007\/s12105-015-0634-0","article-title":"Primary synovial sarcoma of the pharynx: a series of five cases and literature review","volume":"9","author":"Fatima","year":"2015","journal-title":"Head Neck Pathol"},{"key":"2025082802504914000_13.11.e236204.12","doi-asserted-by":"crossref","unstructured":"Kakkar A , Banerjee D , V Kane S , et al . 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