title: Frontal Sinolith.
abstract: Sinolith in the paranasal sinus is still a rare entity. A sinolith in the frontal sinus is extremely rare, and only 2 patients have been reported in the English literature. Herein, the authors present an additional patient of frontal sinolith in a 78-year-old woman. The patient was preoperatively diagnosed with fungus ball of the frontal sinus, based on radio-opaque densities on computed tomography. Endoscopic surgery was performed and surgical biopsy was interpreted as sinolith. Clinical manifestations of frontal sinolith, including imaging study findings, are discussed with a review of the literature pertaining to this condition. Despite its rarity, frontal sinolith should be considered in the differential diagnosis of radio-densities in the frontal sinus.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, South Korea.
authors.forename: Dong Hoon
authors.initials: DH
authors.lastname: Lee
authors.forename: Tae Mi
authors.initials: TM
authors.lastname: Yoon
authors.forename: Joon Kyoo
authors.initials: JK
authors.lastname: Lee
authors.forename: Sang Chul
authors.initials: SC
authors.lastname: Lim
mesh_terms: D000368:Aged; D001706:Biopsy / Q000379:methods; D003937:Diagnosis, Differential; D004724:Endoscopy / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D005626:Frontal Sinus / Q000000981:diagnostic imaging*; D006801:Humans; D020347:Lithiasis / Q000000981:diagnostic imaging*; D009181:Mycoses / Q000175:diagnosis; D010254:Paranasal Sinus Diseases / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods