title: Basaloid Squamous Cell Carcinoma: An Unusual Ball-Valve Laryngeal Obstruction.
abstract: BACKGROUND
  A rare case of basaloid squamous cell carcinoma (BSCC) of the larynx, which has not been previously reported, is described.
  
  
  METHODS
  A 60-year-old man was presented to the Otolaryngology Department with progressive dyspnoea and dysphagia to solids for over a period of 1 week. Direct laryngoscopy revealed a tumour at the laryngeal aspect of the epiglottis, which prolapsed into the laryngeal inlet each time the patient inspired. This resulted in an inspiratory stridor despite adequate glottic opening and normal mobility of the vocal cords.
  
  
  CONCLUSIONS
  Therefore, in cases where a ball-valve lesion causes intermittent life-threatening airway obstruction, BSCC of the larynx, though rare, must be considered as a differential diagnosis.
authors.affiliation: Department of Otorhinolaryngology, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia .
authors.forename: Sien Hui
authors.initials: SH
authors.lastname: Tan
authors.affiliation: Department of Otorhinolaryngology, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia .
authors.forename: Khalid W
authors.initials: KW
authors.lastname: Hindi
authors.affiliation: Department of Pathology, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia.
authors.forename: Patricia Ann
authors.initials: PA
authors.lastname: Chandran
authors.affiliation: Department of Otorhinolaryngology, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia .
authors.forename: Aun Wee
authors.initials: AW
authors.lastname: Chong
keywords: Airway obstruction; Basaloid squamous cell carcinoma; Larynx; Squamous cell carcinoma