Quiste de Thornwaldt. Reporte de un caso / Thornwaldt´s cyst. Case report / Cisto de Thornwaldt. Reporte de um caso

El quiste de Thornwaldt es poco común en la nasofaringe, pueden causar síntomas clínicos significativos. Fue descrito por Tornwaldt en 1885. Es una patología poco frecuente, benigna, inducida por persistencia de remanente de notocorda. Los quistes de Thornwaldt son generalmente siempre asintomáticos. El diagnóstico de esta masa suele ser incidental, como parte de un examen endoscópico nasal, o se puede detectar en el examen radiológico. Reportamos este caso de un paciente adulto que presento sintomatología auditiva inicial, secundario a un quiste nasofaríngeo hallado en la rinofibrolaringocospia, requiriendo tratamiento quirúrgico para su resolución.

Thornwaldt’s cyst is uncommon in the nasopharynx, can cause significant clinical symptoms. It was described by Tornwaldt in 1885. It is a rare, benign pathology induced by persistence of notochord remnant. Thornwaldt’s cysts are usually always asymptomatic. The diagnosis of this mass is usually incidental as part of a nasal endoscopic examination or that can be detected in the radiological examination. We report the case of an adult patient who presented initial, secondary to nasopharyngeal cyst found in the rinofibrolaringocospia auditory symptoms, requiring surgical treatment for resolution.

Thornwaldt Cisto é raro na nasofaringe, pode fazer com que os sintomas clínicos significativos. Foi descrito por Tornwaldt em 1885. É uma doença rara, patologia benigna induzida restos persistentes de notocorda. Thornwaldt cistos são geralmente sempre assintomática. O diagnóstico desta massa é geralmente incidental como parte de um exame endoscópico nasal ou que pode ser detectado no exame radiológico Reportamos este caso de um paciente adulto que apresento sintomatología auditiva inicial, secundário a um quiste nasofaríngeo achado na rinofibrolaringocospia, requerendo tratamento quirúrgico para sua resolução.

Expression of GRIN2A in benign and malignant nasopharyngeal diseases and its clinical significance.

The gene glutamate receptor, ionotropic, N-methyl D-aspartate 2A (GRIN2A) is associated with development and neuron viability, and our previous studies showed it to be substantially methylated in nasopharyngeal carcinoma, indicating a link to this disease. The aim of this work was to investigate GRIN2A expression and its clinical significance in nasopharyngeal carcinoma, in contrast to nasopharyngitis and nasopharyngeal precancerous lesions. Fifty patients with nasopharyngeal carcinoma were selected as study subjects, while 28 chronic nasopharyngitis patients and 22 individuals with nasopharyngeal precancerous lesions were used as controls. Immunohistochemical analysis was used to study GRIN2A protein expression, and its relationship with nasopharyngeal carcinoma clinical stage and histopathological features were assessed. GRIN2A appeared as yellow staining in the cytoplasm or nucleus. It was strongly expressed in the nasopharyngeal epithelial tissues of patients with chronic nasopharyngitis and in nasopharyngeal precancerous lesions, the proportions of GRIN2A-positive cells being 82.1 and 72.7%, respectively. However, it was weakly expressed in nasopharyngeal carcinoma tissues, with 28.0% of cells testing positive (P < 0.001). No significant difference in the expression of GRIN2A was observed between different clinical stages and pathological grades. We conclude that weak GRIN2A expression is a major feature of nasopharyngeal carcinoma.

Congenital nasal stenosis in newborn infants.

Five newborn infants with evidence of nasal obstruction were shown to have congenital nasal stenosis. Conservative treatment, including temporary nasopharyngeal intubation in three, eventually resulted in symptomatic relief, so that surgery could be avoided.