title: Characteristics of polypoid lesions in patients undergoing microsurgery of the larynx.
abstract: BACKGROUND
  Dysphonia is the main symptom of lesions that affect the vocal tract. Many of those lesions may require surgical treatment. Polyps are one of the most common forms of vocal cord lesions and the most prevalent indication for laryngeal microsurgery. There are different types of polyps, and their different characteristics can indicate different prognosis and treatments.
  
  
  OBJECTIVE
  To conduct a comparative study of polypoid lesions (angiomatous and gelatinous) in patients undergoing laryngeal microsurgery via an electronic protocol.
  
  
  METHODS
  We prospectively evaluated 93 patients diagnosed with vocal fold polyps; the polyps were classified as angiomatous or gelatinous.
  
  
  RESULTS
  In total, 93 patients undergoing laryngeal microsurgery were diagnosed with vocal fold polyps. Of these, 63 (64.74%) had angiomatous and 30 (32.26%) gelatinous polyps. Most patients with angiomatous polyps were men; their polyps were frequently of medium size, positioned in the middle third of the vocal fold, and accompanied by minimal structural alterations (MSA). In contrast, the majority of patients with gelatinous polyps were women; their polyps were smaller, positioned in the middle and posterior third of the vocal fold, and were not accompanied by MSA. Both types of polyps were more frequently located on the right vocal fold.
  
  
  CONCLUSIONS
  Angiomatous polyps were more frequently encountered than gelatinous polyps. In addition, correlations between polyp type and sex, polyp size, position, location, and the presence of MSA were observed. Different surgical techniques were used, but the postoperative results were similar and satisfactory after speech therapy.
authors.affiliation: ENT doctor recognized by ABORL (Physician at Hospital IPO and at the ENT Department of HC/UFPR.
authors.forename: Jorge Massaaki Ido
authors.initials: JM
authors.lastname: Filho
authors.affiliation: ENT doctor recognized by ABORL (Fellow at Hospital IPO.
authors.forename: Bettina
authors.initials: B
authors.lastname: Carvalho
authors.affiliation: ENT doctor recognized by ABORL (Physician at Hospital IPO.
authors.forename: Flavio Massao
authors.initials: FM
authors.lastname: Mizoguchi
authors.affiliation: ENT doctor recognized by ABORL (Physician at Hospital IPO and at the ENT Department of HC/UFPR.
authors.forename: Guilherme Simas do Amaral
authors.initials: GS
authors.lastname: Catani
authors.affiliation: ENT doctor recognized by ABORL (Physician at Hospital IPO and at the ENT Department of HC/UFPR.
authors.forename: Evaldo Dacheux de Macedo
authors.initials: ED
authors.lastname: Filho
authors.affiliation: PhD in Medical Anatomy (1976). Professor associated with the postgraduate program in Surgical Principles at the Faculdade Evangelica do Parana.
authors.forename: Osvaldo
authors.initials: O
authors.lastname: Malafaia
authors.affiliation: PhD in Clinical Surgery in the postgraduate program at UFPR (2002). Professor and Coordinator of Vascular Surgery at HC/UFPR.
authors.forename: Henrique Jorge
authors.initials: HJ
authors.lastname: Stahlke
keywords: Microsurgery; Polyps; Vocal Cords