Mesenteric schwannoma: an unusual cause of abdominal mass.

Schwannomas (or neurilemmomas) are slow-growing mesenchymal neoplasms of the peripheral nerve sheath that may arise at almost any anatomical site. Mesentery schwannoma is extremely rare, with less than ten previously described cases. We present the case of a 38-year-old woman with arterial hypertension and chronic kidney disease with an abdominal painless mass of two years duration and an inconclusive pre-operative clinical diagnosis; she was successfully treated by complete surgical resection of the mass. The aim of this report is to recognize the possibility of schwannomas in the differential diagnosis of abdominal slowly growing tumors.

Hepatocellular carcinoma arising in a telangiectatic hepatocellular adenoma.

Telangiectatic hepatocellular adenoma is a rare, recently recognized subtype of benign liver tumor that may very rarely undergo transformation into hepatocellular carcinoma. We report an unusual case of a 75-year-old woman with no history of oral contraceptive use that underwent malignant transformation of a telangiectactic hepatocellular adenoma. No risk factors for adenoma development were identified in this otherwise healthy woman. Radiological characteristics, gross features and histopathology are herein described. In conclusion, telangiectatic hepatocellular adenoma can undergo malignant transformation. Further studies are needed to better clarify the factors associated with malignant progression.

[Principles and technique of magnetic resonance guided focused ultrasound surgery (MRgFUS) in the treatment of uterine fibroids]. / Principios y técnica de la cirugía con ultrasonido focalizado guiada con resonancia magnética (MRgFUS) en el tratamiento de los miomas uterinos.

Uterine fibroids are a significant source of morbidity for women of reproductive age, and can result in substantial symptoms affecting their quality of life. Definitive treatment has traditionally been a myomectomy, but increasingly women are not prepared to undergo such an invasive procedure for a benign and usually self-limiting condition. Focused ultrasound ablation is one of the least invasive treatment options outside medical therapy and does not require an anesthetic.Magnetic resonance guided focused ultrasound (MRgFUS) ablation combines therapy delivered by an ultrasound transducer with imaging guidance for therapy and thermal feedback provided by magnetic resonance imaging. This paper provides an overview of the MRgFUS technique, including a brief description of the treatment system, guidelines for selection of patients and follow-up, and a comparison with other treatment techniques.

Esclerosis temporal mesial en epilepsia del lóbulo temporal: evaluación cuantitativa con resonancia magnética 3.0 Tesla / Mesial temporal sclerosis in temporal lobe epilepsy: quantitative magnetic resonance imaging assesment with 3.0 Tesla

Se estima que hasta 70% de los pacientes con epilepsia del lóbulo temporal tienen una alteración morfológica del hipocampo, la esclerosis hipocampal mesial, también llamada esclerosis temporal mesial que se caracteriza por pérdida de neuronas y gliosis responsable del foco epiléptico. En la resonancia magnética convencional la esclerosis temporal mesial se define por la presencia de una atrofia del hipocampo más una señal hiperintensa en las secuencias con tiempo de repetición largo específicas para el hipocampo (FLAIR y T2 coronal). La resonancia magnética 3.0 Tesla permite actualmente estudiar la anatomía y fisiología cerebral o cambiar el mecanismo de adquisición de la imagen y los parámetros posproceso. La volumetría proporciona actualmente un volumen preciso y junto con la espectroscopia hace posible una evaluación cuantitativa del hipocampo. Ambas técnicas se suman a los hallazgos de la resonancia magnética convencional para identificar las lesiones cerebrales que participan en un foco epiléptico. Presentamos un caso de esclerosis temporal mesial con análisis cuantitativo del hipocampo y una breve revisión de la literatura.

Recent studies show that up to 70% of patients with temporal lobe epilepsy (TLE) have a hippocampal deficit known as temporal mesial sclerosis (TME) characterized by neuron loss and gliosis, and considered the main epileptogenic focus among this type of patients. The magnetic resonance imaging (MRI) features of TME include atrophy and hippocampus hyperintensitY in the long TR sequences (Flair and T2). The 3.0 Tesla MRI allows the study of the brain's anatomy and physiology using different sequences and post processing mechanisms. Volumetry can determine the accurate volume and, together with spectroscopy, makes possible a quantitative assessment of the hyppocampus. Both techniques help to locate cerebral areas with epileptogenic activity. We describe the imaging findings from spectroscopy and volumetry in a patient with TLE and briefly review the related literature.

[Mesial temporal sclerosis in temporal lobe epilepsy: quantitative magnetic resonance imaging assesment with 3.0 Tesla]. / Esclerosis temporal mesial en epilepsia del lóbulo temporal: evaluación cuantitativa con resonancia magnética 3.0 Tesla.

Recent studies show that up to 70% of patients with temporal lobe epilepsy (TLE) have a hippocampal deficit known as temporal mesial sclerosis (TME) characterized by neuron loss and gliosis, and considered the main epileptogenic focus among this type of patients. The magnetic resonance imaging (MRI) features of TME include atrophy and hippocampus hyperintensitY in the long TR sequences (Flair and T2). The 3.0 Tesla MRI allows the study of the brain's anatomy and physiology using different sequences and post processing mechanisms. Volumetry can determine the accurate volume and, together with spectroscopy, makes possible a quantitative assessment of the hyppocampus. Both techniques help to locate cerebral areas with epileptogenic activity. We describe the imaging findings from spectroscopy and volumetry in a patient with TLE and briefly review the related literature.