Asunto(s)
Colesteatoma/diagnóstico , Síndrome de Gardner/diagnóstico , Laberintitis/diagnóstico , Osificación Heterotópica/diagnóstico , Colesteatoma/cirugía , Colonoscopía , Diagnóstico Diferencial , Humanos , Laberintitis/microbiología , Laberintitis/cirugía , Masculino , Mastoidectomía , Persona de Mediana Edad , Osificación Heterotópica/cirugía , Tomografía Computarizada por Rayos XRESUMEN
OBJECTIVE: The objective of this study was to determine the density and homogeneity of the nonossified thyroid cartilage (NOTC) on contrast-enhanced computed tomography (CT) providing preliminary information for future evaluation of cartilage invasion using dual-energy CT. METHODS: One hundred normal-larynx CT scans were evaluated for the density and homogeneity of NOTC. RESULTS: The density of the NOTC was homogeneous in all cases. Nonossified thyroid cartilage had higher mean density than contiguous muscle, but there was overlap. In 47 cases, a lucent area was observed at the junction of the ossified and NOTC but not within the NOTC itself. In 11 cases, ossification was observed in only 1 cortex of the thyroid cartilage. Cartilage at the anterior commissure was not ossified in 7 cases. CONCLUSIONS: Nonossified thyroid cartilage has a homogeneous appearance on contrast-enhanced CT scans, but showed some normal variations that could be mistakenly reported as tumor invasion.