RESUMO
OBJECTIVE: The purpose of our article is to review the magnetic resonance imaging (MRI) features of nongynaecologic cystic lesions of the pelvis. CONCLUSION: The rising use of MRI for pelvic exploration will result in an increase in incidental detection of pelvic cystic cysts. Pelvic cysts of non gynecologic origin are less frequent than gynecologic cysts. However, they account for a wide range of abnormalities, and radiologists must be aware of their features and characteristics.
Assuntos
Cistos/diagnóstico , Imageamento por Ressonância Magnética/métodos , Pelve , Cordoma/diagnóstico , Meios de Contraste , Humanos , Tumores de Vasos Linfáticos/diagnóstico , Linfocele/diagnóstico , Meningocele/diagnóstico , Neoplasias Embrionárias de Células Germinativas/diagnóstico , Doenças Peritoneais/diagnósticoRESUMO
OBJECTIVE: The purpose of our article was to review the magnetic resonance imaging (MRI) features of pelvic abscesses. Pelvic abscesses account for a wide range of abnormalities from various etiologies. CONCLUSION: MRI is being increasingly used for pelvic exploration. Radiologists must thus be aware of their features and characteristics.
Assuntos
Abscesso/diagnóstico , Imageamento por Ressonância Magnética/métodos , Pelve/patologia , Abscesso/etiologia , Abscesso/patologia , Meios de Contraste , Diagnóstico Diferencial , Humanos , Fatores de RiscoRESUMO
BACKGROUND AND OBJECTIVES: Conflicting data have been reported concerning the use of kidney graft arterial resistance index (RI) measured by Doppler to predict death-censored graft loss. We hypothesized that changes in RI values could carry better information than a single measure of RI. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Four hundred twenty-five renal transplant recipients were included in the study. We tested whether changes in renal arterial resistance index between 4 and 12 months after transplant (ΔRI(4â12)) were predictive of graft loss. RESULTS: Neither 4-month nor 1-year RI predicted graft loss. The area under the receiver operating characteristics curve of ΔRI(4â12) for graft loss was 0.75. A ΔRI(4â12) ≥10% had the best sensitivity and specificity. One year after transplant, 22% of the study population had ΔRI(4â12) ≥10%. Fifty-five patients (12.9%) experienced graft loss during follow-up. The annual incidence of graft loss was higher in patients with ΔRI(4â12) ≥10% (3.5 versus 1.3%; P = 0.009). In multivariate analysis, patients with ΔRI(4â12) ≥10% had an increased risk of graft loss (hazard ratio, 6.21; 95% confidence interval, 1.99 to 22.15; P = 0.002). CONCLUSIONS: A variation in RI ≥10% in the first year after transplant is an independent risk factor for death-censored graft loss in renal transplant recipients.
