Carga del cuidador en cuidadores informales primarios de pacientes con cáncer de cabeza y cuello / Caregiver burden in primary informal caregivers of patients with head and neck cancer

Introducción: El cáncer constituye actualmente en Cuba la segunda causa de muerte para todas las edades y es una enfermedad compleja, cuya connotación psicosocial repercute no solo en el paciente, sino en todos aquellos que conforman su red de apoyo social. Objetivo: caracterizar la carga del cuidador en cuidadores informales primarios de pacientes con cáncer de cabeza y cuello, hospitalizados en el Instituto Nacional de Oncología y Radiobiología de La Habana, desde diciembre de 2016 a marzo de 2017. Material y Métodos: Se realizó un estudio descriptivo-correlacional, desde una metodología mixta, a 100 pacientes que cumplieron con determinados criterios de inclusión. Se aplicó para la recogida de la información una entrevista a sujetos tipos, y el instrumento Cuestionario de Carga del Cuidador de Zarit, y se solicitó el consentimiento informado de los cuidadores para su participación. Resultados: Los resultados revelaron altos niveles de carga del cuidador, siendo la dimensión impacto del cuidado la más afectada y la carga interpersonal la menos dañada. Se demostró que, a menor conocimiento del cuidador sobre la enfermedad del paciente, mayor carga del cuidador y carga interpersonal. Conclusiones: Se obtuvo que el nivel de moderado a severo de la carga de los cuidadores informales primarios del estudio se debió fundamentalmente a las afectaciones en la salud física y psíquica, limitaciones en las áreas personal y laboral, y estados emocionales negativos: ansiedad, preocupación y rasgos depresivos(AU)

Introduction: Cancer in Cuba is currently the second cause of death at all ages for being an extremely complex disease because of the various characteristics in terms of etiology, location, evolution and prognosis. In addition, it has a psychosocial connotation and a negative emotional impact not only for the patient, but also for all those people who are part of a network of social support. Objective: The objective of this research was to characterize the caregiver burden in primary caregivers of patients with head and neck cancer, hospitalized at the National Institute of Oncology and Radiobiology from December 2016 to March 2017. Materials and methods: A mixed methodology descriptive-correlational study was carried out on 100 patients who met certain inclusion criteria. An interview for the collection of the information and the Zarit Caregiver Burden Scale were applied to subject types. Informed consent of the caregivers was obtained for their participation in the study. Results: The results revealed high levels of caregiver burden. The most affected dimension was the impact of care whereas the interpersonal burden was the least damaged dimension. It was demonstrated that, to a lesser knowledge of the caregiver about the patient's illness, greater caregiver burden and interpersonal burden. Conclusions: It was concluded that the moderate to severe level of the burden of the primary informal caregivers of the study was mainly due to the affectations in the physical and mental health, the limitations in the personal and work areas, and the existence of negative emotional states: anxiety, worry, and depressive traits(AU)

18F-FDG PET/CT in staging and delineation of radiotherapy volume for head and neck cancer. / 18F-FDG PET/TC para la estadificación y la delineación del volumen de radioterapia en el cáncer de cabeza y cuello.

PURPOSE: The aim is to investigate the use of 18F-FDG (fluorine-18 fluorodeoxyglucose) PET/CT in head and neck cancer (HNC) staging and its effect on the therapeutic strategy and radiotherapy (RT) planning. METHODS AND MATERIALS: One hundred patients with HNC were included. Primary tumor sites: 18% oral cavity, 20% oropharynx, 12% hypopharynx, 11% nasopharynx, 37% larynx, 2% paranasal sinuses. Patients were staged according to the American Joint Committee of Cancer 7th edition. Stage: 5% stage I, 7% stage II, 14% stage III, 61% stage IVA, 7% stage IVB and 6% stage IVC. A contrast-enhanced CT and a 18F-FDG PET/CT acquired under RT position were performed. Both exams were compared to analyze patients' staging reclassification. Changes in therapeutic strategy were analyzed. RESULTS: 18F-FDG PET/CT detected 6 distant metastases and treatment intention changed to palliative. Eight synchronous tumors were detected; one received palliative treatment. 18F-FDG PET/CT reclassified cTNM staging in 27patients. Tumor extension changed in 28 (14% up-staged; 14% down-staged), implying a change in GTV (Gross Tumor Volume) delineation. Nodal detection was reclassified in 47 patients: 8 patients down-staged (N2C to N2A/N2B/N1) and 2 were false positive. Nineteen patients were false negatives and 5 staged as N+(N1/N2A/N2B) turned out into N2C. These staging modifications imply adapting the nodal volume to be irradiated. CONCLUSIONS: 18F-FDG PET/CT reclassification was higher than 10% in almost all categories studied (cTNM, tumor extension and nodal disease) and detects more metastases and synchronous tumors than conventional studies, which has an impact on the therapeutic patient management and RT planning.

PET-TC, rol y fundamentos de su uso en la especialidad de otorrinolaringología y cirugía de cabeza y cuello / PET-CT, role and fundamentals of its use in the specialty of otolaryngology and head and neck surgery

RESUMEN El PET-TC es un examen de alto costo y que expone a los pacientes a altas dosis de radiación comparado con las imágenes que habitualmente solicitamos, es por esto que hemos revisado la literatura, explicamos las bases de este tipo de examen, los rendimientos esperados, falsos positivos y negativos, asi como las recomendaciones internacionales para su correcto uso en los pacientes con cáncer de cabeza y cuello.

ABSTRACT The PET-CT is a high cost test that exposes patients to high doses of radiation compared to the images that we usually request, this is why we have reviewed the literature, we explain the bases of this type of examination, the expected, false positive and negative results, as well as international recommendations for its correct use in patients with head and neck cancer.