title: Concomitant inverted papilloma and fungus ball in unilateral maxillary sinus.
abstract: OBJECTIVE
  The concomitant appearance of an inverted papilloma and a fungus ball in unilateral maxillary sinus is rare. These disease entities may be difficult to distinguish before surgery.
  
  
  METHODS
  A male patient presented with the characteristic symptoms of chronic rhinosinusitis. A preoperative sinus computed tomography scan revealed unilateral sinus opacification, hyperdense calcified spots, and bony erosion of the medial maxillary sinus wall.
  
  
  RESULTS
  During the operation, a cheesy, clay-like fungus ball was removed. In addition, a papillary appearance of the sinus mucosa led to the suspicion of inverted papilloma behind the fungus ball and nasal polyps. The histopathology showed an inverted papilloma concomitant with a fungal ball and some inflammatory polyps.
  
  
  CONCLUSIONS
  In addition to preoperative imaging, one should be aware of the potential etiology; careful intraoperative reevaluation is imperative for clinicians to avoid misdiagnosis and to provide adequate management of the underlying disease.
authors: Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan, ROC.
authors: L J
authors: LJ
authors: Hsin
authors: S W
authors: SW
authors: Yang
mesh_terms: D006801:Humans; D008297:Male; D008444:Maxillary Sinus Neoplasms / Q000150:complications*; D015523:Maxillary Sinusitis / Q000150:complications* / Q000601:surgery; D008875:Middle Aged; D009181:Mycoses / Q000150:complications*; D018308:Papilloma, Inverted / Q000150:complications*