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The patient underwent definitive radiation therapy, and at evaluation 4 months later, there was no metabolic or endoscopic evidence of any disease, except for minor toxicity limited to nocturnal xerostomia. This case underscores the importance of timely diagnosis and the role of radiotherapy in treating SEP, particularly in uncommon anatomical locations.<\/jats:p>","DOI":"10.25259\/jcis_176_2025","type":"journal-article","created":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T10:46:18Z","timestamp":1773657978000},"page":"11","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Solitary extramedullary plasmacytoma of the nasopharynx: A case report"],"prefix":"10.25259","volume":"16","author":[{"given":"Daniel","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York, United States,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonathan","family":"Gigas","sequence":"additional","affiliation":[{"name":"Department of Faculty of Medicine, University of Rochester Medical Center, Rochester, New York, United 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