Imagen por resonancia magnética en la estadificación y planificación del tratamiento del cáncer de cérvix / Magnetic resonance imaging for staging and treatment planning in cervical cancer

Objetivo. En este artículo revisamos los puntos clave indispensables para realizar una correcta estadificación del cáncer de cérvix mediante resonancia magnética. Conclusión. La resonancia magnética es el método de elección para la estadificación locorregional del cáncer de cérvix. Una correcta valoración de sus factores pronósticos, como el tamaño tumoral, la invasión de estructuras adyacentes y la presencia de metástasis ganglionares, resulta fundamental para decidir un adecuado manejo terapéutico (AU)

Objective. To review the key points that are essential for the correct staging of cervical cancer by magnetic resonance imaging. Conclusion. Magnetic resonance imaging is the method of choice for locoregional staging of cervical cancer. Thorough evaluation of prognostic factors such as tumor size, invasion of adjacent structures, and the presence of lymph node metastases is fundamental for planning appropriate treatment (AU)

Magnetic resonance imaging for staging and treatment planning in cervical cancer. / Imagen por resonancia magnética en la estadificación y planificación del tratamiento del cáncer de cérvix.

OBJECTIVE: To review the key points that are essential for the correct staging of cervical cancer by magnetic resonance imaging. CONCLUSION: Magnetic resonance imaging is the method of choice for locoregional staging of cervical cancer. Thorough evaluation of prognostic factors such as tumor size, invasion of adjacent structures, and the presence of lymph node metastases is fundamental for planning appropriate treatment.

Imagen por resonancia magnética en la degeneración olivar hipertrófica / Magnetic resonance imaging of hypertrophic olivary degeneration

Objetivo. Repasar los mecanismos fisiopatológicos de la degeneración olivar hipertrófica, prestando atención a los aspectos epidemiológicos y clínicos, y sobre todo a los hallazgos de imagen. Material y métodos. Se revisaron 5 pacientes diagnosticados de degeneración olivar hipertrófica en nuestro centro entre los años 2010 y 2013, analizando los aspectos clínicos, epidemiológicos y radiológicos relevantes. Resultados. En todos los casos se vio una hiperintensidad en los núcleos olivares inferiores en las secuencias FLAIR y T2. Las secuencias potenciadas en T1 no mostraron alteraciones de señal ni tampoco se observó realce tras inyectar contraste intravenoso. En los casos en los que se realizó una secuencia de difusión, no hubo alteraciones significativas. Salvo en un paciente, en el que presumiblemente no había pasado el tiempo necesario, en todos los restantes se vio una hipertrofia olivar. Las alteraciones fueron bilaterales en dos de los cinco individuos. En solo un caso las manifestaciones clínicas fueron típicas. Conclusión. Dado que los pacientes pueden no presentar manifestaciones clínicas atribuibles a la degeneración olivar hipertrófica, resulta importante reconocer los signos radiológicos característicos (AU)

Objective. To review the pathophysiologic mechanisms involved in hypertrophic olivary degeneration, with attention to epidemiologic and clinical aspects and especially to imaging findings. Material and methods. We reviewed 5 patients diagnosed with hypertrophic olivary degeneration at our center from 2010 through 2013, analyzing relevant clinical, epidemiologic, and radiologic findings. Results. In all cases, a hyperintensity was seen in the inferior olivary nuclei in FLAIR and T2-weighted sequences. No signal alterations were seen on T1-weighted sequences, and no enhancement was seen after intravenous injection of contrast material. In the cases studied by diffusion-weighted imaging, no significant alterations were seen in these sequences. Olivary hypertrophy was seen in all patients except in one, in whom presumably not enough time had elapsed for hypertrophy to occur. The alterations were bilateral in two of the five cases. Only one case exhibited the typical clinical manifestations. Conclusion. Given that patients may not present clinical manifestations that can be attributed to hypertrophic olivary degeneration, it is important to recognize the characteristic radiologic signs of this entity (AU)

Torsión lobar tras lobectomía / Lobar torsion after lobectomy

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Magnetic resonance imaging of hypertrophic olivary degeneration.

OBJECTIVE: To review the pathophysiologic mechanisms involved in hypertrophic olivary degeneration, with attention to epidemiologic and clinical aspects and especially to imaging findings. MATERIAL AND METHODS: We reviewed 5 patients diagnosed with hypertrophic olivary degeneration at our center from 2010 through 2013, analyzing relevant clinical, epidemiologic, and radiologic findings. RESULTS: In all cases, a hyperintensity was seen in the inferior olivary nuclei in FLAIR and T2-weighted sequences. No signal alterations were seen on T1-weighted sequences, and no enhancement was seen after intravenous injection of contrast material. In the cases studied by diffusion-weighted imaging, no significant alterations were seen in these sequences. Olivary hypertrophy was seen in all patients except in one, in whom presumably not enough time had elapsed for hypertrophy to occur. The alterations were bilateral in two of the five cases. Only one case exhibited the typical clinical manifestations. CONCLUSION: Given that patients may not present clinical manifestations that can be attributed to hypertrophic olivary degeneration, it is important to recognize the characteristic radiologic signs of this entity.