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European Archives of Oto-Rhino-Laryngology

, Volume 264, Issue 8, pp 907–911 | Cite as

Dilation of intercellular spaces is associated with laryngo-pharyngeal reflux: an ultrastructural morphometric analysis of laryngeal epithelium

  • Alessandro FranchiEmail author
  • Beatrice Brogelli
  • Daniela Massi
  • Marco Santucci
  • Enrico De Campora
  • Oreste Gallo
Laryngology

Abstract

Gastroesophageal reflux disease (GERD) can be associated with ear, nose, and throat signs and symptoms, a condition often referred to as laryngopharyngeal reflux (LPR). However, the morphologic alterations of laryngeal mucosa associated with LPR are currently poorly understood. Since the dilation of intercellular spaces (DIS) between squamous epithelial cells is considered a morphologic marker of acid damage to esophageal mucosa in GERD, we evaluated whether similar changes can be detected in the laryngeal epithelium of patients affected by LPR. The study group included 15 patients affected by LPR and 7 normal controls, who underwent laryngeal biopsies at the interarytenoid area. Specimens were routinely processed for light microscopic and ultrastructural examination. The intercellular spaces were measured in electron microscopy images using a computer assisted morphometric system. Ultrastructural analysis demonstrated an irregular intercellular space dilation in specimens from the group of patients with LPR. Another ultrastructural abnormality observed in a minority of patients was the presence of numerous cytoplasmic vacuoles. Computer assisted morphometric analysis demonstrated that the intercellular space between squamous cells was significantly wider in patients with LPR than in control subjects (411.7 nm ± 188.6 SD vs. 155.8 nm ± 56.4 SD, P = 0.003). These data indicate that ultrastructural evidence of DIS of epithelial cells may be a morphologic marker of acid reflux, as already described in esophageal mucosa. If this result will be confirmed in larger series it may provide a useful diagnostic tool for the identification of LPR.

Keywords

Laryngopharyngeal reflux Intercellular space Electron microscopy Morphometric analysis 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Alessandro Franchi
    • 1
    Email author
  • Beatrice Brogelli
    • 2
  • Daniela Massi
    • 1
  • Marco Santucci
    • 1
  • Enrico De Campora
    • 3
  • Oreste Gallo
    • 3
  1. 1.Department of Human Pathology and OncologyUniversity of FlorenceFirenzeItaly
  2. 2.Department of Oto-Neuro-Ophtalmologic SurgeryUniversity of FlorenceFlorenceItaly
  3. 3.Section of Otolaryngology, Department of Oto-Neuro-Ophtalmologic SurgeryUniversity of FlorenceFlorenceItaly

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