{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T05:43:45Z","timestamp":1781934225046,"version":"3.54.5"},"reference-count":15,"publisher":"BMJ","issue":"5","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,4,12]]},"published-print":{"date-parts":[[2023,5]]},"abstract":"<jats:p>Our patient is a man in his mid-20s with an atypical presentation of a catecholamine-secreting sinonasal paraganglioma. He was referred to our tertiary otolaryngology unit for persistent right infraorbital numbness. A nasoendoscopic examination demonstrated a smooth mass arising from the posterior aspect of the right middle meatus. There was also right infraorbital paraesthesia. Imaging revealed a lesion in the right pterygopalatine fossa. Blood investigations revealed significantly elevated serum normetanephrine levels. The lesion was demonstrated to be octreotide-avid with no other lesions detected. The presumptive diagnosis of a catecholamine-secreting paraganglioma was made, and an endoscopic resection of the tumour was performed. Histopathology of the tumour demonstrated a \u2018zellballen\u2019 growth pattern consistent with a paraganglioma. Catecholamine-secreting sinonasal paragangliomas are exceedingly rare with multifaceted challenges. More studies are required to improve our knowledge of this condition.<\/jats:p>","DOI":"10.1136\/bcr-2023-254848","type":"journal-article","created":{"date-parts":[[2023,5,2]],"date-time":"2023-05-02T11:01:55Z","timestamp":1683025315000},"page":"e254848","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Unusual presentation of a rare catecholamine-secreting sinonasal paraganglioma"],"prefix":"10.1136","volume":"16","author":[{"given":"Jian Li","family":"Tan","sequence":"first","affiliation":[{"name":"Otolaryngology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia"},{"name":"Otorhinolaryngology, Tan Tock Seng Hospital, Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pei Yinn","family":"Toh","sequence":"additional","affiliation":[{"name":"Otolaryngology, Sir Charles Gairdner Hospital, Perth, Western Australia, 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