Schwanoma de laringe: relato de caso

Abstract

Resumo / SummarySchwanomas são tumores benignos, de crescimento lento, encapsulados, que surgem da bainha das células de Schwann de nervos motores, sensitivos ou cranianos, não contendo elementos nervosos. A localização na laringe é extremamente rara, existindo relatos esporádicos na literatura mundial. O objetivo deste trabalho é relatar um caso de schwanoma laríngeo atendido em nosso meio. O paciente de 82 anos de idade, sexo feminino, procurou nosso serviço com queixa de disfagia para sólidos de longa data e sensação de globus faríngeo. A laringoscopia com telescópio rígido de 70º evidenciou um tumor submucoso, arredondado, na região interaritenóidea. A tomografia computadorizada de pescoço mostrou tratar-se de lesão aparentemente sólida, sem necrose central e sem extensão para planos profundos, medindo aproximadamente 2,5 cm no maior diâmetro. A paciente foi submetida a microcirurgia de laringe, com ressecção completa da lesão. O exame histopatológico revelou tratar-se de um schwanoma laríngeo. A paciente evoluiu bem, sem sinais de tumor residual ou recidiva em dois anos de seguimento clínico.

Partial laryngectomy and reconstruction with rotation of the epiglottis in the treatment of a rare laryngeal schwannoma: a case report

“…The size of the tumor, the site of the lesion, the damage to the structures of the larynx, the surgeon’s preference, and the risk of mucosal damage all play a role in the choice of the surgical technique. The size of the lesion is the principal determinant of the route of access [ 13 , 14 ]. There is controversy in the literature with respect to preoperative tracheostomy.…”

Fifteen years of hoarseness - case report of a rare laryngeal schwannoma

“…The characteristic finding in laryngoscopy is the presence of a round smooth pinkish submucosal tumor emerging from the vestibular fold or the aryepiglottic fold, possibly obstructing the larynx depending on how much it has grown 3 , 4 .…”

“…Laryngeal schwannomas may cause dysphonia, vocal fold fixation, and even airway obstruction, depending on their size and location 1 , 2 , 3 , 4 , 5 , 6 .…”

Laryngeal schwannoma: a case report with emphasis on sonographic findings

“…Schwannoma is a benign nerve sheath tumor composed of Schwann cells. Twenty-five to forty-five percent of all schwannomas occur in the head and neck region, and laryngeal involvement is rarely observed (in 0.1% to 1.5% of cases) ( 1 - 3 ) . When present in this location, approximately 80% of these tumors affected the aryepiglottic fold, and 20% the vocal cords and vestibular folds ( 4 ) .…”

“…The main symptoms of such condition are secondary to the mass effect. Most common symptoms include dysphagia, dysphonia, pharyngeal globus sensation and, depending on the lesion size, respiratory distress with inspiratory stridor ( 1 , 4 ) .…”