title: Methylene blue staining and probing for fistula resection: application in a case of bilateral congenital preauricular fistulas.
abstract: Preauricular sinus and fistulas are minor developmental anomalies. They are bilateral in 35% to 50% of cases. We describe the application of a combined technique in a rare case of bilateral congenital preauricular fistulas. Initial fistula probing serves as a surgical guide, and further methylene blue infection helps to avoid leaving viable squamous epithelial remnants.
mesh_terms: D000328:Adult; D004396:Coloring Agents; D017577:Cutaneous Fistula / Q000150:complications / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery*; D003560:Cysts / Q000150:complications / Q000151:congenital / Q000175:diagnosis / Q000601:surgery; D004427:Ear Diseases / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery*; D004431:Ear, External; D005260:Female; D006801:Humans; D008751:Methylene Blue
chemical_list: D004396:Coloring Agents; D008751:Methylene Blue