RESUMEN
Primary benign teratoma of the retroperitoneum is a rare tumor in the adult population. Only one case with an MRI examination has been reported in the English literature. This paper describes the CT and MRI features of a retroperitoneal teratoma in a 24-year-old male and discusses the value of MRI in the diagnosis and the preoperative imaging of such a tumor.
Asunto(s)
Quiste Dermoide/diagnóstico , Imagen por Resonancia Magnética , Neoplasias Retroperitoneales/diagnóstico , Tomografía Computarizada por Rayos X , Adulto , Quiste Dermoide/diagnóstico por imagen , Humanos , Masculino , Neoplasias Retroperitoneales/diagnóstico por imagenRESUMEN
Gd-DOTA is an intravenous contrast medium used in MRI. The clinical and biological tolerance of Gd-DOTA was studied in patients with chronic renal failure (e.g., those having a glomerular filtration rate of less than 60 mL/min). Twenty patients were randomized into two groups. In the control group, spin-echo (SE) T1- and T2-weighted images of the kidneys were obtained without injection of Gd-DOTA. In the DOTA-group, patients received 0.1 mmol/kg of Gd-DOTA. SE T1-weighted images were obtained before and after injections; a T2-weighted sequence was performed before injection. Clinical data, serum creatinine, and laboratory parameters were estimated before, and 24 and 48 hr after MRI. No adverse reaction was reported after injection of Gd-DOTA. Mean serum creatinine and glomerular filtration rate remained unchanged in both groups. For five patients in the control group and three patients in the DOTA-group the serum creatinine levels increased more than 10% and less than 25%. No evidence of nephrotoxicity was observed with Gd-DOTA in patients with chronic renal failure.
Asunto(s)
Medios de Contraste/toxicidad , Compuestos Heterocíclicos , Fallo Renal Crónico/diagnóstico , Riñón/patología , Imagen por Resonancia Magnética , Compuestos Organometálicos , Estudios de Evaluación como Asunto , Femenino , Compuestos Heterocíclicos/toxicidad , Humanos , Fallo Renal Crónico/fisiopatología , Pruebas de Función Renal , Masculino , Persona de Mediana Edad , Compuestos Organometálicos/toxicidadRESUMEN
Intramural hematomas of the duodenum in adults most often have a traumatic cause, but they may also be a complication of acute alcoholic pancreatitis. The diagnosis is based on the CT appearance. Treatment is usually medical. Surgery is necessary in case of recurrence or of a major hemorrhagic syndrome.
Asunto(s)
Enfermedades Duodenales/etiología , Hematoma/etiología , Pancreatitis/complicaciones , Enfermedad Aguda , Adulto , Enfermedades Duodenales/diagnóstico por imagen , Hematoma/diagnóstico por imagen , Humanos , Masculino , Tomografía Computarizada por Rayos XRESUMEN
The magnetic resonance (MR) features of an adult nephroblastoma are presented. The MR appearance is correlated with ultrasound (US), computed tomographic (CT) and pathology. The tumor appeared heterogeneous with calcifications and areas of necrosis and hemorrhage. MR correctly staged the tumor.