title: Polypoid sinusitis mimicking orbital malignancy.
abstract: A 15-year-old boy developed a rapidly progressive exophthalmos of 6 mm within two months. Radiologic evidence showed bony erosion, a palpable firm mass in the right upper eyelid, and mass blocking the right nares. This tumor was found to be polypoid sinusitis emanating through the lamina papyracea.
mesh_terms: D000293:Adolescent; D000328:Adult; D005094:Exophthalmos / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male; D009918:Orbital Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D010256:Paranasal Sinuses / Q000601:surgery*; D011127:Polyps / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography