Abstract |
Nine oral and oropharyngeal squamous cell carcinomas were removed with a contact Nd-YAG laser. Clinical and morphological studies on wound healing and effects of the Nd-YAG laser were performed. The wounds were not sutured and patients did not complain of any severe symptoms. The wound healing was prolonged to 3-6 weeks. Cells and glands degenerated at a depth of 2-3 mm by the direct effects of the laser. The epithelium exhibited acantholysis 5 mm from the site of laser injury. Scanning electron microscopy showed no coagulation or other coated material in the wound created by a surgical knife, while the wound surface by laser consisted of carbonization, well-coated and non-coated areas. These findings varied with the laser power. The coagulation and thermal effects of the Nd-YAG laser resulted in autolysis of tumor cells at least within 5 mm of the cutting surface. The contact Nd-YAG laser was useful for the removal of the malignant tumor in the oral cavity and oropharynx where it is difficult to maintain a generous safety margin.
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Authors | M Miyaguchi, S Sakai |
Journal | Auris, nasus, larynx
(Auris Nasus Larynx)
Vol. 21
Issue 4
Pg. 226-31
( 1994)
ISSN: 0385-8146 [Print] Netherlands |
PMID | 7779024
(Publication Type: Journal Article)
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Topics |
- Adult
- Aged
- Carcinoma, Squamous Cell
(pathology, surgery)
- Epithelium
(ultrastructure)
- Female
- Humans
- Laser Coagulation
- Laser Therapy
- Male
- Microscopy, Electron
- Neoplasm Invasiveness
- Oropharyngeal Neoplasms
(pathology, surgery)
- Oropharynx
(pathology, surgery)
- Tongue
(pathology, surgery)
- Tongue Neoplasms
(pathology, surgery)
- Wound Healing
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