Ethmoid tumor and oncogenic osteomalacia: Case report and review of the literature

European Annals of Otorhinolaryngology, Head and Neck Diseases
A VillepeletA Moya-Plana

Abstract

Oncogenic osteomalacia is a very rare disease usually caused by a phosphaturic mesenchymal tumor, particularly the "mixed connective tissue type", secreting FGF-23 hormone. The authors report a case of ethmoid tumor associated with oncogenic osteomalacia and discuss management based on a review of the literature. A 41-year-old woman with multiple fractures causing major disability was diagnosed with early-onset osteoporosis. CT scan followed by MRI, performed due to the concomitant presence of nasal obstruction, showed a right ethmoid tumor in contact with the dura mater and periorbital tissues, but with no signs of invasion. Endoscopic resection was performed with reconstruction of the defect of the cribriform plate by a nasoseptal flap. Nasal and bone symptoms subsequently resolved. Histological examination revealed a phosphaturic mesenchymal tumor. Twelve cases of mesenchymal tumor of the ethmoid sinus associated with oncogenic osteomalacia have been reported to date. FGF-23 assay and whole-body MRI with STIR sequence are useful for the diagnosis. A very favorable outcome is observed after surgical treatment in the majority of cases.

Citations

Oct 24, 2019·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·Xiang LiWeibo Xia
May 9, 2019·Global Change Biology·Benjamin M SleeterTamara S Wilson
Dec 9, 2020·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Zhenzhen ZhuWei Lv
Jul 18, 2021·Journal of Medical Case Reports·Camila R MunizAndré A A Nunes
Aug 10, 2021·The Annals of Otology, Rhinology, and Laryngology·Davis P ArgersingerErin L McKean

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