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Estadiamento do câncer de endométrio: acurácia diagnóstica da ressonância magnética / Staging of endometrial cancer: magnetic resonance diagnostic accuracy
São Paulo; s.n; 2019. 69 p. ilust, tabelas, quadros.
Thesis in Portuguese | LILACS, Inca | ID: biblio-1222862
RESUMO
Objetivo Principal: Avaliar a acurácia da ressonância magnética (RM) no estadiamento locorregional de pacientes com câncer de endométrio e correlacionar os achados da RM com recidiva e sobrevida livre de doença. Material e Métodos: Estudo de corte transversal, observacional, unicêntrico, com coleta prospectiva dos dados. Foram estudadas 80 pacientes com diagnóstico histológico de câncer de endométrio, submetidas à RM para o estadiamento locorregional pré-cirúrgico e acompanhadas no A.C.Camargo Cancer Center, no período de outubro de 2015 a setembro de 2017. As imagens da RM foram avaliadas individualmente e correlacionadas com os achados histopatológicos. Resultados: A idade das pacientes variou entre 34 e 85 anos, com média de 62,7 anos (DP: 9,8 anos, mediana: 63 anos). O tipo histológico mais comum foi o adenocarcinoma endometrióide, presente em 60 casos (75%). O tamanho do tumor avaliado pela RM teve boa concordância com o tamanho avaliado pelo anatomopatológico (CC = 0,953). Houve boa correlação do grau de invasão miometrial nas diferentes sequências de RM, sendo que a sequência ponderada em difusão (DWI) foi a que apresentou maior concordância com o anatomopatológico (kappa= 0,772). O protocolo reduzido da RM (sequências T2 e DWI) apresentou acurácia diagnóstica, sensibilidade e especificidade semelhantes ao protocolo completo (sequências T2, DWI e pós-contraste) para detecção da invasão miometrial. Houve forte concordância entre o estadiamento pela RM e o estadiamento anatomopatológico, com coeficiente Kappa de 0,822 e acurácia de 86,9%. Durante este período de seguimento médio de quase 2 anos (DP: 8,6 meses, mediana: 24,6 meses), 8 mulheres (10%) tiveram recidiva de doença e três morreram (3,8%). O tamanho do tumor foi o único achado da RM que apresentou correlação com sobrevida livre de doença (HR: 1,057; IC95: 1,018-1,099; p=0,004). Conclusões: O estadiamento locorregional de pacientes com câncer de endométrio pela RM apresentou boa correlação com o estadiamento anatomopatológico cirúrgico no presente estudo. Dentre as sequências da RM, a DWI demonstrou melhor acurácia diagnóstica na avaliação da invasão miometrial. O tamanho do tumor avaliado na RM apresentou correlação com sobrevida livre de doença
ABSTRACT
Objective: To evaluate the accuracy of magnetic resonance imaging (MRI) in the locoregional staging of patients with endometrial cancer and to correlate MRI findings with relapse and disease-free survival. Material and Methods: This cross-sectional, observational, unicentric study with prospective data collection included 80 patients with histological diagnosis of endometrial cancer submitted to MRI for pre-surgical locoregional staging and treated at the A.C.Camargo Cancer Center from October 2015 to September 2017. MRI images were evaluated individually and correlated with histopathological findings. Results: Patients' age ranged from 34 to 85 years, with a mean of 62.7 years (SD: 9.8 years, median: 63 years). The most common histological type was endometrioid adenocarcinoma, present in 60 cases (75%). The size of the tumor evaluated by MRI had good concordance with the size evaluated by pathology (CC = 0.953). There was a good correlation of the degree of myometrial invasion in the different MRI sequences, and the diffusion-weighted imaging (DWI) was the one that presented the greatest concordance with the anatomopathological (kappa = 0.772). The reduced MRI protocol (T2 and DWI sequences) showed diagnostic accuracy, sensitivity and specificity similar to the complete protocol (T2, DWI and post-contrast sequences) for detection of myometrial invasion. There was a strong agreement between MRI and anatomopathological staging, with a Kappa coefficient of 0.822 and an accuracy of 86.9%. During a mean follow-up of almost 2 years (SD: 8.6 months, median: 24.6 months), 8 women (10%) had disease recurrence and three died (3.8%). Tumor size was the only MRI finding that correlated with disease-free survival (HR: 1.057, 95% CI: 1.018-1.099, p = 0.004) Conclusions: The locoregional staging of patients with endometrial cancer by MRI showed a good correlation with surgical histopathologic staging in the present study. Among the MRI sequences, DWI showed on exhibited a better diagnostic accuracy in the evaluation of myometrial invasion. Tumor size assessed on MRI showed correlation with disease-free survival
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Prognosis / Magnetic Resonance Imaging / Endometrial Neoplasms / Survivorship / Neoplasm Staging Type of study: Diagnostic study / Practice guideline / Observational study / Prevalence study / Prognostic study Limits: Adult / Aged / Female / Humans Language: Portuguese Year: 2019 Type: Thesis

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Full text: Available Index: LILACS (Americas) Main subject: Prognosis / Magnetic Resonance Imaging / Endometrial Neoplasms / Survivorship / Neoplasm Staging Type of study: Diagnostic study / Practice guideline / Observational study / Prevalence study / Prognostic study Limits: Adult / Aged / Female / Humans Language: Portuguese Year: 2019 Type: Thesis