{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T14:07:27Z","timestamp":1765807647027,"version":"3.44.0"},"reference-count":13,"publisher":"BMJ","issue":"2","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2019,1,14]]},"published-print":{"date-parts":[[2019,2]]},"abstract":"<jats:p>We report an extremely rare case of a hybrid tumour of the maxillary sinus. A 51-year-old man presented with a 6-week history of nasal congestion and epiphora. Radiological imaging demonstrated a maxillary sinus tumour, with extensive local invasion. Surgical excision included maxillectomy, left eye exenteration and free flap closure. Histology of the excised specimen showed a rare hybrid tumour containing adenoid cystic carcinoma, salivary duct carcinoma, epithelial-myoepithelial carcinoma and basal cell adenoma. Hybrid tumours are very rare tumour entities which are composed of at least two distinct tumour types. Each tumour entity conforms with a defined tumour type. The tumour entities of a hybrid tumour are not separated but have an identical origin within a definite topographical area. Diagnosis and appropriate management requires high index of suspicion, pathological endeavour to look for a more aggressive accompanying tumour and adequate oncological treatment according to the highest grade of tumour.<\/jats:p>","DOI":"10.1136\/bcr-2015-212000","type":"journal-article","created":{"date-parts":[[2019,2,8]],"date-time":"2019-02-08T08:30:16Z","timestamp":1549614616000},"page":"bcr-2015-212000","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["More than meets the eye"],"prefix":"10.1136","volume":"12","author":[{"given":"Ailbhe","family":"White-Gibson","sequence":"first","affiliation":[{"name":"Department of Head and Neck Surgery, St. James\u2019s Hospital, Dublin, Ireland"},{"name":"Department of Trauma and Orthopaedics, AMNCH, Tallaght Hospital, Dublin, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Lennon","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology Head and Neck Surgery, St. James\u2019s Hospital, Dublin, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Esther","family":"O\u2019Regan","sequence":"additional","affiliation":[{"name":"Department of Histopathology, St. James\u2019s Hospital, Dublin, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Conrad","family":"Timon","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology Head and Neck Surgery, St. James\u2019s Hospital, Dublin, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2019,2,7]]},"reference":[{"key":"2025082802080588000_12.2.bcr-2015-212000.1","doi-asserted-by":"crossref","first-page":"1704","DOI":"10.1002\/hed.21988","article-title":"Minor salivary gland tumors of the sinonasal region: results of a retrospective analysis with review of literature","volume":"34","author":"Pantvaidya","year":"2012","journal-title":"Head Neck"},{"key":"2025082802080588000_12.2.bcr-2015-212000.2","doi-asserted-by":"crossref","unstructured":"Badlani J , Gupta R , Balasubramanian D , et al . 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