Is possible to rule out clinically significant prostate cancer using PI-RADS v2 for the assessment of prostate MRI?

ABSTRACT Objectives To evaluate the diagnostic performance and interobserver agreement of PI-RADS v2. Materials and Methods In this Institutional Review Board approved single-center retrospective study, 98 patients with clinically suspected PCa who underwent 3-T multiparametric MRI followed by MRI/TRUS fusion-guided prostate biopsy were included from June 2013 to February 2015. Two radiologists (R1 and R2) with 8 and 1 years of experience in abdominal radiology reviewed the MRI scans and assigned PI-RADS v2 scores in all prostate zones. PI-RADS v2 were compared to MRI/TRUS fusion-guided biopsy results, which were classified as negative, PCa, and significant PCa (sPCa). Results Sensitivity, specificity, NPV, PPV and accuracy for PCa was 85.7% (same for all metrics) for R1 and 81.6%, 79.6%, 81.2%, 80.0% and 80.6% for R2. For detecting sPCa, the corresponding values were 95.3%, 85.4%, 95.9%, 83.7% and 89.8% for R1 and 93.0%, 81.8%, 93.7%, 86.7% and 86.7% for R2. There was substantial interobserver agreement in assigning PI-RADS v2 score as negative (1, 2, 3) or positive (4, 5) (Kappa=0.78). On multivariate analysis, PI-RADS v2 (p <0.001) was the only independent predictor of sPCa compared with age, abnormal DRE, prostate volume, PSA and PSA density. Conclusions Our study population demonstrated that PI-RADS v2 had high diagnostic accuracy, substantial interobserver agreement, and it was the only independent predictor of sPCa.

Os três líquens: escleroso, plano e plano erosivo / The three lichens: sclerosus, planus and erosive

Líquen escleroso (LE) e líquen plano (LP) são doenças de natureza inflamatória que atacam a pele e a região anogenital e que, por vezes, podem ser de difícil diferenciação clínica em seus respectivos estágios iniciais. O LE teve sua incidência demonstrada em 1,7% dos atendimentos ginecológicos, em todas as faixas etárias. Já o LP ataca cerca de 1% das mulheres, mas sua incidência real é difícil de avaliar. LE e LP são doenças cuja patogênese é multifatorial. Fatores genéticos e hormonais e infecções e trauma foram associados ao desenvolvimento de LE, enquanto que LP tem seu desenvolvimento menos compreendido; no entanto, também é associado a fatores genéticos, a infecções e ao uso de certos medicamentos. As duas doenças causam bastante desconforto às pacientes, pois podem se apresentar com dor, ardência, prurido e também há a possibilidade de estenose do introito vaginal e consequente dispareunia. Na suspeita de LE e LP, deve ser feito diagnóstico diferencial com outras doenças de pele e com neoplasia intraepitelial vulvar (NIV). O risco de transformação maligna justifica o acompanhamento que as pacientes devem ter pelo resto da vida. O tratamento de primeira linha para LE e LP consiste em corticosteroides tópicos superpotentes. O diagnóstico requer frequente biópsia para sua confirmação. O objetivo deste trabalho foi revisar a fisiopatologia, complicações e tratamento dessas duas doenças, as quais são muito importantes, pois não possuem cura e podem comprometer seriamente a qualidade de vida das pacientes.(AU)

Lichen sclerosus (LS) and lichen planus (LP) are diseases of an inflammatory nature that attack the skin and anogenital region, and sometimes they might have a difficult clinical differentiation in their early stages. LE has its incidence demonstrated in 1.7% of gynecological consultations in all age groups. LP attacks about 1% of women, but its true incidence is difficult to assess. LE and LP are diseases whose pathogenesis is multifactorial. Genetic and hormonal factors, infections and trauma were associated with the development of LE, while LP has its development less understood; however, it is also associated with genetic factors, infections and the use of certain medications. Both diseases cause much discomfort to the patient, because they may present with pain, burning, itching and there is also the possibility of stenosis of the vaginal opening and consequent dyspareunia. On suspicion of LE and LP should be done differential diagnosis with other skin diseases and vaginal intraepithelial neoplasia (VIN). The risk of malignant transformation justifies the monitoring that patients should have in the rest of their life. The first-line treatment for LE and LP consists of topical corticosteroids super powerful. The diagnosis often requires biopsy for confirmation. The aim of this study was to review the pathophysiology, complications and treatment of these diseases, which are very important because they have no cure and can seriously compromise the quality of life of patients.(AU)