Argon laser use in papillomas of the larynx

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Abstract
Papillomas of the larynx are discussed, including the use of lasers. Argon lasers' differences from CO2 lasers and techniques are outlined. Case reports are given in which laryngeal papillomas were removed from two patients with the argon laser and examined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and stereoscanning electron microscopy (SSEM). The depth and width of morphological change are noted. Peripheral to the laser impact site, four zones were observed: 1. coagulation necrosis, 2. contracted epithelial cells, 3. minimally damaged epithelial cells, and 4. morphologically undamaged epithelial cells. In Zone 2, cells were violently popped-off as heat was conducted through the epithelium. The potential for spread of papillomas was discussed and suction of the vapor plume recommended when removing laryngeal papillomas with the argon laser.

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