Clinical and histopathological features of follicular thyroid cancer in Chile

ABSTRACT Objective: Follicular thyroid carcinoma (FTC) is less frequent but has a worse prognosis than papillary carcinoma. The available evidence on pre-operative characteristics of FTC is controversial. Our objective was to characterize the clinical, ultrasound and histopathological presentation of FTC patients treated Chile. Subjects and methods: Retrospective analysis of 97 patients treated for FTC in 6 large centers in Chile. We analyzed their ultrasonographic features and classified the nodules according to ATA risk of malignancy and TI-RADS score, as well as the cytological findings according to the Bethesda system. We described their clinical and histopathological findings at diagnosis and classified their risk of recurrence and mortality according to ATA 2015 recurrence risk category and the eighth edition of the AJCC/UICC staging system, respectively. Results: Median age was 48 years and 73.2% were females. The median diameter was 38.8 mm; only 9.5% of them were microtumors. According to ATA risk of malignancy, 86% of the nodules were low or intermediate suspicious, while 78% were category 3 or 4A nodules according to the TI-RADS. Regarding the Bethesda system, 65.9% had indeterminate cytology (20.6% category III and 45.3% category IV). At histological examination, most were minimally-invasive and angio-invasive tumors with less than 4 foci (54.7% and 28.4% respectively). More than 90% of FTC were unifocal and there was no lymphovascular or extrathyroidal invasion or lymph node involvement. Four patients (4.1%) had distant metastases at diagnosis. Most patients (95%) had stage I or II disease according to the AJCC/UICC staging system, while the risk of recurrence was low at 51.5% when using the ATA risk of recurrence scale. Conclusions: At diagnosis, most FTCs were nodules of low or intermediate suspicion at ultrasound, nearly two thirds had indeterminate cytology according to the Bethesda system, and nearly 50% of them were of low risk of recurrence.

Clinical and histopathological features of follicular thyroid cancer in Chile.

Objective: Follicular thyroid carcinoma (FTC) is less frequent but has a worse prognosis than papillary carcinoma. The available evidence on pre-operative characteristics of FTC is controversial. Our objective was to characterize the clinical, ultrasound and histopathological presentation of FTC patients treated Chile. Subjects and methods: Retrospective analysis of 97 patients treated for FTC in 6 large centers in Chile. We analyzed their ultrasonographic features and classified the nodules according to ATA risk of malignancy and TI-RADS score, as well as the cytological findings according to the Bethesda system. We described their clinical and histopathological findings at diagnosis and classified their risk of recurrence and mortality according to ATA 2015 recurrence risk category and the eighth edition of the AJCC/UICC staging system, respectively. Results: Median age was 48 years and 73.2% were females. The median diameter was 38.8 mm; only 9.5% of them were microtumors. According to ATA risk of malignancy, 86% of the nodules were low or intermediate suspicious, while 78% were category 3 or 4A nodules according to the TI-RADS. Regarding the Bethesda system, 65.9% had indeterminate cytology (20.6% category III and 45.3% category IV). At histological examination, most were minimally-invasive and angio-invasive tumors with less than 4 foci (54.7% and 28.4% respectively). More than 90% of FTC were unifocal and there was no lymphovascular or extrathyroidal invasion or lymph node involvement. Four patients (4.1%) had distant metastases at diagnosis. Most patients (95%) had stage I or II disease according to the AJCC/UICC staging system, while the risk of recurrence was low at 51.5% when using the ATA risk of recurrence scale. Conclusion: At diagnosis, most FTCs were nodules of low or intermediate suspicion at ultrasound, nearly two thirds had indeterminate cytology according to the Bethesda system, and nearly 50% of them were of low risk of recurrence.

Implementación de una estrategia de revinculación a la atención en pacientes con infección crónica por el virus de la hepatitis C en el Hospital Central de las Fuerzas Armadas de Uruguay. Resultados preliminares

Resumen: Introducción: La infección crónica por el virus de la hepatitis C (VHC) es responsable de 400.000 muertes al año, asociadas fundamentalmente al desarrollo de cirrosis y carcinoma hepatocelular. El advenimiento de los nuevos antivirales de acción directa ha marcado un punto de inflexión en el tratamiento del VHC, llevando a casi 100% la curación de los pacientes tratados. En tal sentido, la OMS se ha fijado como objetivos para el año 2030, reducir un 90% las nuevas infecciones por el VHC y un 65% la mortalidad asociada a este virus, para lo cual es necesario el desarrollo de estrategias activas de diagnóstico y vinculación a la atención y tratamiento. El objetivo del trabajo es realizar un diagnóstico de situación de los pacientes infectados por el VHC en el Hospital Central de las Fuerzas Armadas (HCFFAA), e implementar y evaluar una estrategia secuencial de revinculación a la atención. Metodología: Se construyó la cascada de tratamiento mediante una estimación de los pacientes portadores de infección crónica por VHC basada en la prevalencia local y la revisión de historias clínicas de los pacientes asistidos en el servicio de Hepatología y Trasplante Hepático del HCFFAA. Se implementó una estrategia para contactar a los pacientes con infección por VHC de forma secuencial, buscando re-establecer el vínculo de estos con el servicio de salud, asegurando el acceso a la estadificación de la enfermedad hepática y al tratamiento antiviral. Resultados: La prevalencia global estimada de personas con infección crónica por VHC fue de 1.008 personas. De 135 pacientes con serología positiva, 113 tenían ARN confirmatorio, 76 habían recibido tratamiento y 70 habían alcanzado respuesta virológica sostenida. La implementación de la estrategia logró un aumento en la prescripción del tratamiento del 67% a 76% de los pacientes con infección crónica por VHC confirmada. Conclusiones: La implementación de la estrategia de revinculación fue exitosa, con un aumento de la prescripción del tratamiento antiviral en los pacientes candidatos a tratamiento. La búsqueda activa de los pacientes infectados no diagnosticados mediante el cribado es el siguiente paso para alcanzar los objetivos de erradicación.

Abstract: Introduction: Chronic infection by the hepatitis C virus (HCV) is responsible for 400,000 deaths per year, mainly associated with the development of cirrhosis and hepatocellular carcinoma. The advent of new direct-acting antivirals has marked a turning point in the treatment of HCV, leading to almost 100% cure of treated patients. In this sense, the WHO has set as objectives for the year 2030, to reduce new HCV infections by 90% and the mortality associated with this virus by 65%, for which it is necessary to develop active strategies for diagnosis and linkage to care and treatment. The objective of the work is to carry out a diagnosis of the situation of the patients infected by HCV in the Central Hospital of the Armed Forces (HCFFAA), and to implement and evaluate a sequential strategy of re-attachment to care. Methodology: The treatment cascade was constructed by estimating the number of patients with chronic HCV infection based on local prevalence and review of the medical records of patients seen in the Hepatology and Liver Transplant service of the HCFFAA. A strategy was implemented to contact patients with HCV infection sequentially, seeking to re-establish their link with the health service, ensuring access to liver disease staging and antiviral treatment. Results: The estimated global prevalence of people with chronic HCV infection was 1,008 people. Of 135 patients with positive serology, 113 had confirmatory RNA, 76 had received treatment, and 70 had achieved sustained virologic response. The implementation of the strategy achieved an increase in the prescription of treatment from 67% to 76% of patients with confirmed chronic HCV infection. Conclusions: The implementation of the rebinding strategy was successful, with an increase in the prescription of antiviral treatment in patients who are candidates for treatment. Active search for undiagnosed infected patients through screening is the next step to achieve eradication goals.

Resumo: Introdução: A infecção crônica pelo vírus da hepatite C (HCV) é responsável por 400.000 óbitos por ano, principalmente associada ao desenvolvimento de cirrose e carcinoma hepatocelular. O advento de novos antivirais de ação direta marcou um ponto de virada no tratamento do HCV, levando à cura de quase 100% dos pacientes tratados. Nesse sentido, a OMS estabeleceu como objetivos para o ano de 2030, reduzir em 90% as novas infecções por HCV e a mortalidade associada a este vírus em 65%, para o que é necessário desenvolver estratégias ativas de diagnóstico e vinculação aos cuidados e tratamento. O objetivo do trabalho é realizar um diagnóstico da situação dos pacientes infectados pelo HCV no Hospital Central das Forças Armadas (HCFFAA), e implementar e avaliar uma estratégia sequencial de reinserção aos cuidados. Metodologia: A cascata de tratamento foi construída estimando o número de pacientes com infecção crônica pelo HCV com base na prevalência local e revisão dos prontuários dos pacientes atendidos no serviço de Hepatologia e Transplante de Fígado do HCFFAA. Foi implantada uma estratégia de contato sequencial dos pacientes com infecção pelo HCV, buscando restabelecer o vínculo com o serviço de saúde, garantindo o acesso ao estadiamento da doença hepática e ao tratamento antiviral. Resultados: A prevalência global estimada de pessoas com infecção crônica pelo HCV foi de 1.008 pessoas. Dos 135 pacientes com sorologia positiva, 113 tiveram RNA confirmatório, 76 receberam tratamento e 70 alcançaram resposta virológica sustentada. A implementação da estratégia conseguiu um aumento na prescrição de tratamento de 67% para 76% dos pacientes com infecção crônica pelo HCV confirmada. Conclusões: A implementação da estratégia de religação foi bem sucedida, com aumento da prescrição do tratamento antiviral em pacientes candidatos ao tratamento. A busca ativa de pacientes infectados não diagnosticados por meio de triagem é o próximo passo para atingir as metas de erradicação.

Clinical Presentation and Perioperative Management of Pheochromocytomas and Paragangliomas: A 4-Decade Experience.

PURPOSE: Latin American reports on pheochromocytomas and paragangliomas (PPGLs) are scarce. Recent studies demonstrate changes in clinical presentation and management of these patients. Herein, we assessed the main characteristics of PPGL patients in our academic center over the past 4 decades. METHODS: Demographic, clinical, biochemical, and perioperative data from 105 PPGL patients were retrospectively and prospectively collected over the 1980-2019 period. Data were organized into 4 periods by decade. RESULTS: Age at diagnosis, gender, tumor size and percentage of bilaterality, percentage of paragangliomas, and metastases remained stable across the 4 decades. The proportion of genetic testing and incidentalomas increased in recent decades (all P < 0.001). Therefore, we compared PPGLs diagnosed as incidentalomas (36%) with those clinically suspected (64%). Incidentalomas had fewer adrenergic symptoms (38 vs. 62%; P < 0.001) and lower rates of hypertension (64% vs. 80%; P = 0.01) and hypertensive crisis (28% vs. 44%; P = 0.02); also, they had lower functionality (79% vs. 100%; P = 0.01) and lower catecholamines levels (8.4-fold vs. 12.5-fold above upper cutoffs; P = 0.04). Regarding management of all PPGLs over the decades, we observed significant increases in both perioperative doxazosin dose (P = 0.003) and laparoscopic approach rates (P < 0.001), along with a decrease in the length of hospital stays (P = 0.007). CONCLUSIONS: We observed a change in the clinical presentation of PPGL in recent decades, with a marked increase in incidental cases and milder symptoms. The implementation of a multidisciplinary program for adrenal disorders in our institution has translated into more timely diagnoses, more genetic testing, and improvements in perioperative management.

Acute Liver Failure due to Wilson Disease: Eight Years of the National Liver Transplant Program in Uruguay.

INTRODUCTION AND AIM: Wilson's disease (WD) is an uncommon cause of acute liver failure (ALF). Our aim was to describe clinical features, diagnostic findings, treatments, and outcomes of patients with ALF due to WD. MATERIAL AND METHODS: Retrospective medical record reviews of all patients with ALF due to WD in eight years in Uruguay. RESULTS: WD was the cause of six (15%) of thirty-nine ALF cases. All patients were females, with a mean age of 18 years. Four patients presented with hyperacute liver failure and two with acute failure. Jaundice was the main complaint of all patients. Mean total bilirubin (TB), alkaline phosphatase (AP), AST, and ALT were 27.5 mg/dL, 45.5 lU/l, 156 IU/L, and 51 IU/L, respectively. Ceruloplasmin levels were low in four patients, urinary cooper was high in four, and two had Kayser-Fleischer rings. All patients had Coombs-negative hemolytic anemia, acute kidney injury, histochemical identifiable copper, and advanced fibrosis on liver histology. The average MELD score was 36. All patients were treated with d-penicillamine and listed for urgent liver transplantation (LT). Prometheus® was performed in one patient. Three patients died: two without LT and one after LT. Three patients survived: one without LT (New Wilson Index<11) and two with LT. The referral time to the program and the total time (referral plus waiting list time) were longer for non-survivors than for survivors (14 vs. 3 days and 23 vs. 8 respectively). CONCLUSION: All cases had typical clinical, analytical and histopathology characteristics. Early referral was determinant of prognosis.

Sistema de Soporte Hepático Artificial: ¿Cuándo, a quien y por qué? / Artificial Hepatic Support System: When, to whom and why?

Resumen La falla hepática es un problema de salud debido a su incidencia y su elevada mortalidad a corto plazo (40-80%). La súbita alteración de la función hepática lleva a las manifestaciones clínicas características, con desarrollo de encefalopatía hepática, ictericia, coagulopatía, susceptibilidad aumentada a infecciones, síndrome hepato-renal y falla multi-orgánica. Puede ocurrir en pacientes sin enfermedad hepática preexistente (Falla Hepática Aguda) o en un paciente con enfermedad hepática crónica que sufre una descompensación aguda (Falla Aguda sobre Crónica).El trasplante hepático sigue siendo la única alternativa terapéutica con beneficio demostrado en la sobrevida de estos pacientes. Sin embargo este no siempre puede llevarse a cabo debido a la escasez de órganos y/o la presencia de contraindicaciones para el mismo. En este escenario el sistema de soporte hepático artificial extracorpóreo Prometheus® disponible en Uruguay, es fundamental para mantener la condición del paciente hasta la recuperación espontánea de la función hepática o hasta que exista un órgano disponible para el trasplante.

Abstract Liver Failure is a health problem because of its incidence and high mortality in short terms (40% to 80%). The sudden impairment of liver function leads to its characteristic clinical manifestations with the development of hepatic encephalopathy, jaundice, coagulation disturbances, increased susceptibility to infections, hemodynamic instability, hepatorenal syndrome and multiorgan failure. It may develop in patients without preexisting liver disease (Acute Liver Failure) or in patients with chronic liver disease with an acute decompensation (Acute on Chronic Liver Failure). Liver transplantation is the only therapeutic choice with demonstrated benefit on survival. However it cannot always be done due to the shortage of donor organs and/or the presence of contraindications. In this scenario the extracorporeal liver support system Prometheus® available in Uruguay is really important for maintaining the patient s condition until the spontaneous recovery of the liver function or until a donor organ becomes available.