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.

[Cardiac osteogenic sarcoma with chondroblastic differentiation]. / Sarcoma osteogénico cardiaco con diferenciación condroblástica.

Cardiac tumors are a rare disease. We show here one patient with a heart osteogenic sarcoma with chondroblastic differentiation. The clinical status was initiated with a cadre of cardiac tamponade. Transesophageal echocardiography and thoracic scanner were used to diagnose the cardiac tumor. The definitive diagnosis was confirmed with biopsy. At the present moment, there are very few cases reported in the references on osteogenic sarcoma with chondroblastic differentiation. The methods of diagnosis, the treatment and the histopathology are discussed.

[Functional imaging of tumors. Part 2]. / Imagen funcional tumoral. Parte 2.

Most advances in conventional diagnostic imaging techniques have focused on improving the spatial resolution and speed of acquisition of images or on new contrast agents. However, tumors are extremely complex biological models with a series of characteristics like hypoxia, metabolism, cellularity, angiogenesis, and functionality of the lymph nodes that are very important in oncology but cannot be adequately studied with these diagnostic imaging methods. In this article, we discuss the possible contributions of different functional imaging techniques based on computed tomography, magnetic resonance imaging, or positron emission tomography to obtain information about different biological processes and characteristics that are very important for diagnosing, staging, planning treatment, evaluating the response to treatment, and monitoring the evolution of cancer patients, as well as for the development of new drugs.

[Functional imaging of tumors. Part 1]. / Imagen funcional tumoral. Parte 1.

Most advances in conventional diagnostic imaging techniques have focused on improving the spatial resolution and speed of acquisition of images or on new contrast agents. However, tumors are extremely complex biological models with a series of characteristics like hypoxia, metabolism, cellularity, angiogenesis, and functionality of the lymph nodes that are very important in oncology but cannot be adequately studied with these diagnostic imaging methods. In this article, we discuss the possible contributions of different functional imaging techniques based on computed tomography, magnetic resonance imaging, or positron emission tomography to obtain information about different biological processes and characteristics that are very important for diagnosing, staging, planning treatment, evaluating the response to treatment, and monitoring the evolution of cancer patients, as well as for the development of new drugs.

Riedel thyroiditis: US, CT, and MR evaluation.

We report the ultrasound, CT, and MR findings in a patient with Riedel thyroiditis. The hypointensity of the lesion observed on T1- and T2-weighted sequences, especially when associated with infiltration of adjacent structures of the neck, can be suggestive of Riedel thyroiditis.