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Publication
A ecografia e a ressonância magnética nas alterações fisiológicas e benignas do ovário
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Advisor(s)
Abstract(s)
A ecografia e a ressonância magnética são fundamentais para o diagnóstico e tratamento apropriado da patologia benigna do
ovário na mulher em idade fértil.
O objectivo deste trabalho é rever os aspectos clínicos, ecográficos e em ressonância magnética da fisiologia e patologia benigna
do ovário com correlação anátomo-patológica.
O estudo sono-morfológico complementado pela imagem Doppler orienta o diagnóstico. No entanto, a ressonância magnética
pela sua capacidade multiplanar e melhor diferenciação tecidular, permite uma melhor acuidade diagnóstica, antes da confirmação
histológica.
Os aspectos fisiológicos normais que decorrem durante os ciclos menstruais sob influência hormonal podem ser facilmente
avaliados clínica e ecograficamente.
Os quistos simples têm paredes finas e regulares, tendo o corpo lúteo paredes irregulares, com maior espessura e conteúdo
hemorrágico, que lhe dá aumento de sinal em T1. A saturação da gordura é essencial para diferenciar os teratomas dos quistos
hemorrágicos e endometriomas.
A ausência de fluxo ao Doppler com aumento de dimensões sugere torção do ovário.
Os tumores sólidos que apresentam hipossinal em T2 são tumores do estroma ovárico, como os fibromas
O diagnóstico correcto e o tratamento adequado das alterações fisiológicas e doenças benignas do ovário dependem da adequada
avaliação radiológica.
The ultrasound and magnetic resonance imaging are essential to the diagnosis and appropriate treatment of benign disease in reproductive women. The aim of this work is to review the clinical, ultrasound and magnetic resonance findings of the ovarian physiology and benign pathology with pathologic correlation. The morphological ultrasound study complemented by Doppler image guides the diagnosis. However, the multiplanar ability and better tissue differentiation of magnetic resonance enables better diagnostic accuracy, before the histologic confirmation. The physiological aspects arising during the normal menstrual cycles under the hormone influence can be easily clinical and ultrasound evaluated. The simple cysts have thin walls and are regular, and the corpus luteum cysts have irregular walls, with a greater thickness and hemorrhagic content, which gives high signal on T1-weighted images. The fat saturation is essential to differentiate the teratomas from hemorrhagic and endometrial cysts. On the Doppler study the absence of flow with the increase in size suggests torsion of the ovary. The fibromas are solid tumors with low-signal intensity on T2-weighted images. The correct diagnosis and appropriate treatment of the physiologic disorders and benign diseases of the ovary depend on the adequate imaging evaluation.
The ultrasound and magnetic resonance imaging are essential to the diagnosis and appropriate treatment of benign disease in reproductive women. The aim of this work is to review the clinical, ultrasound and magnetic resonance findings of the ovarian physiology and benign pathology with pathologic correlation. The morphological ultrasound study complemented by Doppler image guides the diagnosis. However, the multiplanar ability and better tissue differentiation of magnetic resonance enables better diagnostic accuracy, before the histologic confirmation. The physiological aspects arising during the normal menstrual cycles under the hormone influence can be easily clinical and ultrasound evaluated. The simple cysts have thin walls and are regular, and the corpus luteum cysts have irregular walls, with a greater thickness and hemorrhagic content, which gives high signal on T1-weighted images. The fat saturation is essential to differentiate the teratomas from hemorrhagic and endometrial cysts. On the Doppler study the absence of flow with the increase in size suggests torsion of the ovary. The fibromas are solid tumors with low-signal intensity on T2-weighted images. The correct diagnosis and appropriate treatment of the physiologic disorders and benign diseases of the ovary depend on the adequate imaging evaluation.
Description
Keywords
Ovário Benigno Ecografia Ressonância magnética Ovary Benign condition Ultrasound Magnetic resonance imaging
Citation
Pácido Santos; Teresa Margarida Cunha. The Ultrasound and Magnetic Resonance in Physiological and Benign Ovarian Conditions, Acta Radiológica Portuguesa, 81, 27-35, 2009.