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1.
World J Gastroenterol ; 28(32): 4540-4556, 2022 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-36157932

RESUMO

Hepatocellular carcinoma (HCC) is the sixth most common cancer. The main risk factors associated with HCC development include hepatitis B virus, hepatitis C virus, alcohol consumption, aflatoxin B1, and nonalcoholic fatty liver disease. However, hepatocarcinogenesis is a complex multistep process. Various factors lead to hepatocyte malignant transformation and HCC development. Diagnosis and surveillance of HCC can be made with the use of liver ultrasound (US) every 6 mo. However, the sensitivity of this imaging method to detect HCC in a cirrhotic liver is limited, due to the abnormal liver parenchyma. Computed tomography (CT) and magnetic resonance imaging (MRI) are considered to be most useful tools for at-risk patients or patients with inadequate US. Liver biopsy is still used for diagnosis and prognosis of HCC in specific nodules that cannot be definitely characterized as HCC by imaging. Recently the American College of Radiology designed the Liver Imaging Reporting and Data System (LI-RADS), which is a comprehensive system for standardized interpretation of CT and MRI liver examinations that was first proposed in 2011. In 2018, it was integrated into the American Association for the Study of Liver Diseases guidance statement for HCC. LI-RADS is designed to ensure high sensitivity, precise categorization, and high positive predictive value for the diagnosis of HCC and is applied to "high-risk populations" according to specific criteria. Most importantly LI-RADS criteria achieved international collaboration and consensus among liver experts around the world on the best practices for caring for patients with or at risk for HCC.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Aflatoxina B1 , Carcinoma Hepatocelular/patologia , Meios de Contraste , Humanos , Neoplasias Hepáticas/patologia , Imageamento por Ressonância Magnética , Estudos Retrospectivos , Sensibilidade e Especificidade
2.
Clin Colorectal Cancer ; 17(4): e631-e637, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-29980490

RESUMO

BACKGROUND: The efficacy and safety of the FOLFIRI (leucovorin, 5-fluorouracil, irinotecan, and oxaliplatin) regimen combined with aflibercept has not been studied in the first-line management of patients with metastatic colorectal cancer (mCRC). PATIENTS AND METHODS: In the context of a prospective single-arm trial (NCT02129257), patients with mCRC received standard doses of a maximum of 12 cycles of FOLFIRI combined with aflibercept (4 mg/kg body weight delivered intravenously) every 2 weeks, followed by aflibercept maintenance. Endpoints were 12-month progression-free survival rate, efficacy, and toxicity. RESULTS: Seventy-three fit patients were enrolled onto the study between 2014 and 2016. Median relative dose intensities administered were 0.80 for irinotecan and 1.0 for aflibercept. The most common grade 3/4 adverse events were neutropenia (13 patients, 18%), febrile neutropenia (3 patients, 4%), diarrhea (11 patients, 15%), hypertension (19 patients, 26%), proteinuria (8 patients, 11%), infections (8 patients, 11%), and mucositis (6 patients, 8%), with no toxic deaths. The objective response rate was 46.6%, significantly associated with the presence of right-sided primary, synchronous metastases, and a relapse-free interval of < 12 months (odds ratio = 3.00, 2.92, and 3.75 respectively, P ≤ .05). Intermediate infiltration by stromal core lymphocytes correlated with progression-free survival (hazard ratio = 0.40, [95% confidence interval (CI), 0.19-0.83], P = .014). At a median follow-up of 24.5 months, 12-month progression-free survival rate was 21.9% (median overall survival 20.9 months [95% CI, 16.6-29], median progression-free survival 8.4 months [95% CI, 7.4-9.3]). CONCLUSION: The FOLFIRI + aflibercept regimen is active and tolerable; however, it failed to improve historical benchmarks of efficacy in chemonaive patients with mCRC. Preliminary data hint that this regimen has cytoreductive activity in disease with adverse biology.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Hepáticas/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias Colorretais/patologia , Feminino , Fluoruracila/administração & dosagem , Seguimentos , Humanos , Irinotecano/administração & dosagem , Leucovorina/administração & dosagem , Neoplasias Hepáticas/secundário , Masculino , Pessoa de Meia-Idade , Oxaliplatina/administração & dosagem , Prognóstico , Estudos Prospectivos , Receptores de Fatores de Crescimento do Endotélio Vascular/administração & dosagem , Proteínas Recombinantes de Fusão/administração & dosagem , Taxa de Sobrevida , Adulto Jovem
3.
Fertil Steril ; 95(2): 558-62, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20637457

RESUMO

OBJECTIVE: To evaluate whether the incidence of luteinizing hormone (LH) rise is reduced by using a flexible compared with a fixed day-6 protocol of GnRH antagonist administration. DESIGN: Randomized controlled trial. SETTING: Tertiary university hospital. PATIENT(S): Patients undergoing in vitro fertilization (n = 146). INTERVENTION(S): Ovarian stimulation was performed using recombinant FSH and GnRH antagonists. GnRH antagonist cetrorelix (0.25 mg/d) was started either on day 6 of stimulation (fixed group) or when LH was >10 IU/L, and/or a follicle with mean diameter >12 mm was present, and/or serum E(2) was >150 pg/mL. Patient monitoring was initiated on day 3 of stimulation. MAIN OUTCOME MEASURE(S): Incidence of LH rise. RESULT(S): No statistically significant difference was observed between the flexible and fixed groups regarding the incidence of LH rise, which was lower in the flexible group (11.0% vs. 15.1%, difference -4.1%, 95% confidence interval -15.4% to +7.1%). No LH surges were observed in any of the patients studied. CONCLUSION(S): Flexible antagonist administration from day 3 onward does not appear to reduce the incidence of LH rises compared with fixed antagonist administration on day 6 of stimulation.


Assuntos
Fertilização in vitro/métodos , Hormônio Liberador de Gonadotropina/análogos & derivados , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Antagonistas de Hormônios/administração & dosagem , Infertilidade/terapia , Adulto , Relação Dose-Resposta a Droga , Feminino , Fármacos para a Fertilidade Feminina/administração & dosagem , Hormônio Liberador de Gonadotropina/administração & dosagem , Humanos , Infertilidade/sangue , Hormônio Luteinizante/sangue , Indução da Ovulação/métodos , Gravidez , Taxa de Gravidez
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