title: Blindness after laryngectomy and bilateral neck dissection in a diabetic patient: case report.
abstract: BACKGROUND
  Neck dissection that accompanies resection of the primary lesion in malignant tumors of the upper aerodigestive tracts may cause complications inherent to the procedure or to prolongation of surgical time, increasing the risks for the patient. Among the complications that might occur is blindness, a rare complication with only 10 cases reported in the literature thus far.
  
  
  OBJECTIVE
  To present the case of a diabetic patient submitted to total laryngectomy and modified and selective neck dissection that resulted in blindness.
  
  
  METHODS
  The authors report on a patient submitted to total laryngectomy and selective neck dissection on the left side, and modified radical neck dissection on the right, who developed blindness. This was probably due to intraoperative hypotension plus the contribution of decompensated diabetes mellitus and thrombosis of the internal jugular vein on the right side. The possible causes, risk factors and care to be taken to prevent this rare but highly debilitating complication are discussed.
authors.affiliation: Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Faculty of Medicine of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil. rcmmamed@rgm.fmrp.usp.br
authors.forename: R C
authors.initials: RC
authors.lastname: Mamede
authors.forename: D L
authors.initials: DL
authors.lastname: Figueiredo
authors.forename: F V
authors.initials: FV
authors.lastname: Mamede
mesh_terms: D001766:Blindness / Q000209:etiology*; D048909:Diabetes Complications; D003920:Diabetes Mellitus / Q000503:physiopathology; D005931:Glottis / Q000601:surgery; D006801:Humans; D007601:Jugular Veins; D007822:Laryngeal Neoplasms / Q000601:surgery*; D007825:Laryngectomy / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D037981:Neck Dissection / Q000009:adverse effects*; D020246:Venous Thrombosis / Q000150:complications