title: Organizing hematoma of the maxillary sinus.
abstract: OBJECTIVE
  The study aims to elucidate the clinical features and surgical results of OHMS (organizing hematoma of the maxillary sinus).
  
  
  METHODS
  We performed a chart review of 20 patients undergoing surgery for maxillary sinus lesions and pathologically diagnosed with OHMS between January 1990 and December 2005.
  
  
  RESULTS
  The most common complaint was frequent epistaxis (70%). Paranasal CT scans showed unilateral expansile maxillary opacification, heterogeneous enhancement, bony destruction (25%), and focal calcification (15%). Treatment consisted of a sublabial approach combined with endonasal endoscopic surgery (50%), endonasal endoscopic surgery alone (45%), and Denker's operation (5%). All patients had a successful outcome without recurrence.
  
  
  CONCLUSIONS
  Conservative surgical approaches such as sublabial or endonasal endoscopic surgery alone or in combination lead to excellent outcomes without recurrence. We propose the term "OHMS" to better describe this rare pathology.
  
  
  CONCLUSIONS
  Our report is the largest series of OHMS to date.
authors.affiliation: Department of Otolaryngology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, South Korea.
authors.forename: Hyung Min
authors.initials: HM
authors.lastname: Song
authors.forename: Yong Ju
authors.initials: YJ
authors.lastname: Jang
authors.forename: Yoo-Sam
authors.initials: YS
authors.lastname: Chung
authors.forename: Bong-Jae
authors.initials: BJ
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006406:Hematoma / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D008297:Male; D008443:Maxillary Sinus; D008875:Middle Aged; D010254:Paranasal Sinus Diseases / Q000175:diagnosis* / Q000601:surgery*