Sobrevida del cáncer glótico en estadio inicial en 4 centros hospitalarios de Uruguay

Introducción: El cáncer de laringe es el tumor maligno de mayor prevalencia en la Otorrinolaringología. La topografía glótica es la más frecuente en Uruguay y suele detectarse en estadios tempranos dada la manifestación precoz y sostenida de disfonía. El objetivo de este estudio es describir la sobrevida libre de enfermedad (SLE) y la sobrevida global (SG) de los pacientes con cáncer de laringe glótico en estadio T1N0M0 en 4 instituciones de Montevideo. Metodología: Se analizó de forma retrospectiva la SG y SLE de 55 pacientes diagnosticados con cáncer de glotis T1 entre los años 2009 y 2019. Para el cálculo de la sobrevida se utilizó el método de Kaplan-Meier. Se estudió además el efecto de variables pronósticas de interés sobre la SG mediante análisis univariado y multivariado. Resultados: En la muestra analizada la SG de los pacientes con cáncer glótico T1N0M0 fue como media de 7.706 años (IC 95% 6.63 - 8.78). A los 5 años, la SG fue de 77.5% (± 7%) y de 62% (± 9.8%) a los 10 años. La SLE para todos los pacientes correspondió al 74.6% (± 7.5%) y 63.1% (± 9.8%), a 5 y 10 años respectivamente. No se alcanzaron las medianas de SG ni de SLE para los grupos. Conclusiones: Los valores de SG y SLE medios obtenidos en nuestro medio son comparables a los valores reportados en la bibliografía internacional. No se alcanzó la mediana de SG ni de SLE, por lo que se puede afirmar que ésta enfermedad tiene, cuando se realiza el tratamiento adecuado, un buen pronóstico vital a los 10 años. Se requiere un seguimiento más largo para determinar las medianas de SG y SLE de los grupos en estudio.

Introduction: Laryngeal cancer is the most prevalent malignant tumor in Otorhinolaryngology. Glottic topography is the most frequent in Uruguay and is usually detected in early stages given the early and sustained manifestation of dysphonia. The objective of this study is to analyze disease-free survival (DFS) and overall survival (OS) of patients with stage T1N0M0 glottic laryngeal cancer at 4 institutions in Montevideo. Methodology: The mean OS and DFS of 55 patients diagnosed with T1 glottic cancer between 2009 and 2019 were retrospectively analyzed. Kaplan-Meier method was used to calculate survival. The prognostic effect of certain variables of interest on OS was also studied using univariate and multivariate analysis. Results: In this study, mean odds survival (OS) for T1N0M0 glottic cancer was 7.706 years (CI 95% 6.63 - 8.78). At 5 years, OS was 77.5% (± 7%) and at 10 years was 62% (± 9.8%). Disease free survival (DFS) was 74.6% ± (7.5%) at 5 years and 63.1% (± 9.8%), at 10 years. Median OS and DFS for the groups were not reached. Conclusions: OS and DFS in our medium is comparable to that reported in the international literature. The median OS and DFS were not reached, so it can be stated that this disease has, when appropriate treatment is performed, a good vital prognosis at 10 years. Longer follow-up is required to determine the median OS and DFS of the study groups.

Introdução: O câncer de laringe é o tumor maligno mais prevalente na Otorrinolaringologia. A topografia glótica é a mais frequente no Uruguai e geralmente é detectada em estágios iniciais devido à manifestação precoce e sustentada da disfonia. O objetivo deste estudo é analisar a sobrevida livre de doença (DFS) e a sobrevida global (OS) de pacientes com câncer de laringe glótico estágio T1N0M0 em 4 instituições em Montevidéu. Metodologia: Foram analisados retrospectivamente o OS e DFS de 55 pacientes diagnosticados com câncer glótico T1 entre 2009 e 2019. O método de Kaplan-Meier foi usado para calcular a sobrevida. Resultados: Na amostra, a sobrevida global (OS) do câncer glótico T1N0M0 foi em média de 7.706 anos (IC 95% 6,63 - 8,78). Aos 5 anos, a OS foi de 77,5% (± 7%) e 62% (± 9,8%) aos 10 anos. A DFS para todos os pacientes correspondeu a 74,6% (± 7,5%) e 63,1% (± 9,8%), aos 5 e 10 anos, respectivamente. As medianas de OS e DFS para os grupos não foram alcançadas. Conclusões: OS e DFS em nosso ambiente é comparável ao relatado na literatura internacional. As medianas de SG e SLD não foram alcançadas, pelo que se pode afirmar que esta doença apresenta, quando realizado tratamento adequado, um bom prognóstico vital aos 10 anos. É necessário um acompanhamento mais longo para determinar a mediana da SG e da SLD dos grupos de estudo.

Clinical Testing of Head Impulse Paradigm and Suppression Head Impulse Paradigm Using a Diagnostic Headband: Combined Clinical Sign for Improved Performance.

OBJECTIVE: We developed a clinical sign that improves the sensitivity, specificity, and predictive values of the Head Impulse Paradigm (HIMP) Test by adding the Suppression Head Impulse Paradigm (SHIMP) Test using a diagnostic headband. METHODS: Prospective and descriptive study analyzing the function of 1,255 horizontal semicircular canals of subjects with differing vestibulo-ocular reflex (VOR) gains who showed-up with symptoms related to neurotology (Montevideo, Uruguay, March 2017 to March 2019). The clinical HIMP and SHIMP tests were assessed and the amplitudes of overt saccades were compared to each other. Clinical findings were contrasted against vHIT gains. CONCLUSION: The HIMP and SHIMP combined test using the H/S headband has high specificity and low sensibility. This test association can identify healthy individuals among individuals typically misdiagnosed as ill by the conventional HIT or HIMP maneuver of the HIMP test, as originally described by Halmagyi and Curthoys. Therefore, we recommend using the headband assisted HIMP/SHIMP test, instead of exclusively relying on positive HIMP results.

Cáncer de cabeza y cuello en Uruguay. Análisis de sobrevida en dos centros de referencia / Head and neck cancer in Uruguay. Survival analysis in two reference centers / Câncer de cabeça e pescoço no Uruguai. Análise de sobrevivência em dois centros de referência

Introducción: el carcinoma escamoso de cabeza y cuello (HNSCC) es el cáncer de mayor prevalencia en la otorrinolaringología, ocupando en el Uruguay el quinto lugar en incidencia y el sexto lugar en mortalidad en hombres. El propósito de este estudio fue analizar la sobrevida global de pacientes con cáncer de cabeza y cuello en dos centros de referencia de Montevideo. Método: se analizó de forma retrospectiva la sobrevida global de 436 pacientes diagnosticados con HNSCC entre los años 2005 y 2015. Se analizó la sobrevida por método de Kaplan-Meier en relación con el estadio tumoral, topografía, estatus de tabaquismo y alcoholismo de los pacientes. Para el estudio de la interacción de las variables con posible importancia en el pronóstico se utilizó el modelo de regresión de Cox. Resultados: la mediana de sobrevida global de los pacientes con cáncer de cabeza y cuello en nuestra serie es de 35,8 meses (23,5-48,1, IC 95%), para el cáncer de laringe fue superior a la del resto de los pacientes con cáncer de otros sitios anatómicos, 77,3 (49,3-105,2, IC 95%) versus 26,2 meses (20,7-48,1, IC 95%, p < 0,001). No hubo diferencia entre la sobrevida global de tabaquistas y no tabaquistas. El grupo de los no alcoholistas presentó una mejor sobrevida global que el grupo de los alcoholistas, 72,4 (39,1-105,7, IC 95%) versus 26,7 (19,9-33,6 IC 95%). El análisis multivariante identificó el estadio y el alcoholismo como factores pronósticos independientes en nuestra serie. Conclusiones: la mediana de sobrevida global de nuestra serie es similar a la reportada en la bibliografía internacional. Los pacientes con cáncer de laringe presentan mayor sobrevida que los pacientes con cáncer de otros sitios otorrinolaringológicos. De los factores de riesgo clásicos, en nuestra serie el consumo de alcohol impacta negativamente en sobrevida de los pacientes con cáncer de cabeza y cuello.

Introduction: head and neck squamous cell carcinomas (HNSCC) is the most prevalent cancer in otorhinolaryngology, being it the fifth cancer in terms of incidence in Uruguay and the sixth in male mortality. The study aims at analysing global survival in patients with head and neck cancer in two reference centers in Montevideo. Method: retrospective analysis of global survival of 436 patients diagnosed with HNSCC between 2005 and 2015. Survival was analysed with the Kaplan-Meier method with regard to the patients' stage of cancer, topography, smoking and alcohol consumption. The Cox regression method was used to study the interaction of variables with potential importance in the prognosis. Results: in our series median global survival of patients with head and neck cancer is 35.8 months (23.5-48.1, CI 95%), it as higher for larynx cancer than that of the rest of the patients with cancer in other anatomic sites, 77.3 (49.4-105.2, CI 95%) versus 26.2 months (20.7 - 48.1, CI 95%, p < 0,001). There was no difference between the global survival of smokers and non-smokers. Non-alcohol consumers presented a better global survival than the group of alcohol consumers, 72.4 (39.1-105.7, CI 95%) versus 26.7 (19.9-33.6 CI 95%). The multivariable analysis identified stage of cancer and alcohol consumption as independent prognostic factors in our series. Conclusions: median global survival in our series is similar to that reported in the international bibliography. Patients with larynx cancer evidence a longer survival than patients with cancer in other otorhinolaryngologic sites. As to classic risk factors, alcohol consumption has a negative impact on the survival of patients with head and neck cancer.

Introdução: o carcinoma epidermóide de cabeça e pescoço (HNSCC) é o câncer com maior prevalência em Otorrinolaringologia; no Uruguai é o quinto tumor em incidência e o sexto em mortalidade em homens. O objetivo deste estudo foi analisar a sobrevida global dos pacientes com câncer de cabeça e pescoço em dois centros de referência de Montevidéu. Métodos: fez-se uma análise retrospectiva da sobrevida global de 436 pacientes diagnosticados com HNSCC no período 2005-2015. A sobrevida foi estudada pelo método de Kaplan-Meier em relação ao estádio tumoral, topografia, estatus de tabaquismo e alcoolismo dos pacientes. Para estudar a interação das variáveis com possível importância no prognóstico utilizou-se o modelo de regressão de Cox. Resultados: a mediana de sobrevida global dos pacientes com câncer de cabeça e pescoço na nossa serie foi de 35,8 meses (23,5-48,1, IC 95%), sendo superior para o câncer de laringe ao do resto dos pacientes com câncer de outros sítios anatômicos, 77,3 (49,3-105,2, IC 95%) versus 26,2 meses (20,7-48,1, IC 95%, p < 0,001). Não se observou diferença entre a sobrevida global de fumantes e não fumantes. O grupo dos não alcoolistas apresentou uma melhor sobrevida global que o grupo dos alcoolistas, 72,4 (39,1-105,7, IC 95%) versus 26,7 (19,9-33,6 IC 95%). A análise multivariante identificou o estádio e o alcoolismo como fatores prognósticos independentes na nossa serie. Conclusões: a mediana de sobrevida global da nossa serie é similar à descrita na bibliografia internacional. Os pacientes com câncer de laringe apresentam maior sobrevida que os pacientes com câncer de outros sítios otorrinolaringológicos. Dos fatores de risco clássicos, na nossa serie o consumo de álcool impacta negativamente na sobrevida dos pacientes com câncer de cabeça e pescoço.

Head-shaking tilt suppression: a clinical test to discern central from peripheral causes of vertigo.

Tilt suppression refers to both tilting the head away from an Earth vertical axis and a reduction of an induced horizontal nystagmus. This phenomenon of reducing an induced horizontal nystagmus involves a circuitry of neurons within the vestibular nuclei and the cerebellum (collectively referred to as velocity storage) and signals from the otolith end organs. Lesions involving this circuitry can disrupt tilt suppression of induced horizontal nystagmus. We investigated the clinical value of combining the horizontal head-shaking nystagmus test with tilt suppression in 28 patients with unilateral peripheral vestibular hypofunction and 11 patients with lesions affecting the central nervous system. Each of the subjects with peripheral vestibular lesions generated an appropriately directed horizontal nystagmus after head shaking that then suppressed the induced angular slow phase velocity on average 52 ± 17.6% following tilt down of the head. In contrast, patients with central lesions had very little ability to suppress post-head-shaking nystagmus (mean 3.4 ± 56%). We recommend tilting the head after head shaking as a useful clinical test to assist in the differential diagnosis of vertiginous patients. In the case of unilateral peripheral vestibular hypofunction, head tilt suppresses the induced nystagmus via influence of the otolith organ. In the case of central pathology, the inability to suppress the nystagmus is from lesions impairing the otolith mediation on the velocity storage circuitry.

Diagnostic Bedside Vestibuloocular Reflex Evaluation in the Setting of a False Negative Fistula Test in Cholesteatoma of the Middle Ear.

Background. False negative fistula testing in patients with chronic suppurative otitis media is a dilemma when proceeding to surgery. It is imperative to rule out a dead labyrinth or a mass effect secondary to the cholesteatoma in an otherwise normally functioning inner ear. We present a case series of three patients in whom a bedside vestibuloocular reflex (VOR) evaluation using a head impulse test was used successfully for further evaluation prior to surgery. Results. In all three cases with a false negative fistula test we were able to further evaluate at the bedside and were not only able to register the abnormal VOR but also localize its deterioration to a particular semicircular canal eroded by the fistula. Conclusion. Vestibuloocular reflex evaluation is mandatory in patients with suspected labyrinthine fistula due to cholesteatoma of the middle ear before proceeding to surgery. We demonstrate successful use of a bedside head impulse test for further evaluation prior to surgery in patients with false negative fistula test.

Evaluation of patients with head and neck cancer by means of 99mTc-glucarate.

UNLABELLED: Preliminary findings have suggested that (99m)Tc-glucarate has tumor-seeking properties. The purpose of this study was to explore the potential of this tracer to evaluate malignant head and neck tumors by means of SPECT/CT software fusion imaging. METHODS: Eleven male patients with advanced head and neck carcinoma were included in the study: 9 with locally advanced disease and 2 with clinical suspicion of local relapse. Scanning started 3-6 h after the injection of 1,110 MBq of (99m)Tc-glucarate. Planar and SPECT images of the head, neck, and thorax were acquired. Three-dimensional images were also coregistered with CT. RESULTS: We found (99m)Tc-glucarate uptake in all suspected lesions. SPECT/CT fusion imaging was helpful in all cases for topographically localizing the tracer foci. CONCLUSION: (99m)Tc-glucarate can be considered a potential tracer for the evaluation of patients with head and neck tumors.