Paper:

RESUMEN CORTO - SHORT SUMMARY

Benign and malignant masses may primarily growth in the pharyngeal area. Due to the region anatomical characteristics, oncological surgery in this area it is very difficult to perform and to achieve the complete removal of the processes. According to the literature in maxillofacial/head and neck oncology surgery, the CO₂ laser is primarily suited for masses transoral resections.The present study made a comparison between patients with oncological masses in the nasopharyngeal area submitted to surgery using a scalpel blade(GS) and CO2 surgical laser(GL), regarding surgical time, bleeding level, patient pain level, healing period, scar tissue, relapse of initial process, and intra- or postoperative complications.A sample of 12 dogs, both genders, was submitted to surgical excision of nasopharyngeal masses with GS and GL.For the CO2 surgical laser we used an Aesculigth model with a superpulse way,12 W of potency and a multi-focus pen. Statistically significant differences were registered for p-value>0.05. Differences were registered for surgery time(p=0.038), first mealtime(p=0.013), pain level(p=0.003) and healing time(p=0.014) with the GL presenting lower values. GL presenting only 1 relapse case and the elapsed time was more than the double for GS. Surgical time and healing time was shorter in the GL. Pain level and its control were also better in the GL at the first 24 hours evaluation.The GL presented a scar tissue much more discrete than GS,and the relapse of the initial process was lower in GL. Multiple advantages for the patient and the surgeon are achieved with the use of the CO₂ laser surgery on the nasopharyngeal oncology masses.

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CO2 LASER VERSUS BLADE SCALPEL SURGERY IN MANAGEMENT OF NASOPHARYNGEAL MASSES IN DOGS