Objective: To compare dermoscopic features of melanocytic nevi with those of early melanomas that were not excised initially because of the ir uncharacteristic clinical and dermoscopic appearance. Design: Retrospectiv...Objective: To compare dermoscopic features of melanocytic nevi with those of early melanomas that were not excised initially because of the ir uncharacteristic clinical and dermoscopic appearance. Design: Retrospective study of the baseline images of 325 melanocytic skin lesions that were observed by digital dermoscopy and finally excised because of changes over time. Setting: A dermatologic clinic and a dermatologic department at a university hospital. Main Outcome Measures: Comparison of baseline images of melanomas and melanocytic nevi by pattern analysis, the ABCD rule of dermoscopy, and the 7- point checklist. Results: Baseline dermoscopic images of 262 melanocytic nevi and 63 melanomas from 315 patients were included in the analysis. The patterns of dermoscopic features observed in the baseline images of melanocytic lesions finally diagnosed as melanomas during follow-up did not differ substantially from the patterns observed in the baseline images of melanocytic nevi. Pattern analysis, the ABCD rule of dermoscopy, and the 7- point checklist failed to achieve adequate diagnostic accuracy for melanoma. In retrospect, no dermoscopic feature or pattern of features could be identified that reliably differentiated between melanomas and melanocytic nevi at the time of the first presentation. Conclusion: Dermoscopy depends on the appearance of classic dermoscopic features and is therefore limited in the diagnosis of very early and mainly featureless melanomas.展开更多
脑梗塞和颅内出血是院外常见的病症,入院前将二者正确地区分开是十分重要的,因为涉及到不同的治疗、搬运措施,并对入院后的治疗有指导意义.现行区分两种患者的诊断计分体系需要大量的数据,而这些数据是急诊医生在院外诊断中并不容易获得...脑梗塞和颅内出血是院外常见的病症,入院前将二者正确地区分开是十分重要的,因为涉及到不同的治疗、搬运措施,并对入院后的治疗有指导意义.现行区分两种患者的诊断计分体系需要大量的数据,而这些数据是急诊医生在院外诊断中并不容易获得的.为此,我们进行了一项研究,用院外易获得的临床和回顾性数据建立了一个模型,以帮助区分脑梗塞和颅内出血的主要诊断结果.＃Out-of-hospital diagnosis of cerebral infarction versus intracranial展开更多
文摘Objective: To compare dermoscopic features of melanocytic nevi with those of early melanomas that were not excised initially because of the ir uncharacteristic clinical and dermoscopic appearance. Design: Retrospective study of the baseline images of 325 melanocytic skin lesions that were observed by digital dermoscopy and finally excised because of changes over time. Setting: A dermatologic clinic and a dermatologic department at a university hospital. Main Outcome Measures: Comparison of baseline images of melanomas and melanocytic nevi by pattern analysis, the ABCD rule of dermoscopy, and the 7- point checklist. Results: Baseline dermoscopic images of 262 melanocytic nevi and 63 melanomas from 315 patients were included in the analysis. The patterns of dermoscopic features observed in the baseline images of melanocytic lesions finally diagnosed as melanomas during follow-up did not differ substantially from the patterns observed in the baseline images of melanocytic nevi. Pattern analysis, the ABCD rule of dermoscopy, and the 7- point checklist failed to achieve adequate diagnostic accuracy for melanoma. In retrospect, no dermoscopic feature or pattern of features could be identified that reliably differentiated between melanomas and melanocytic nevi at the time of the first presentation. Conclusion: Dermoscopy depends on the appearance of classic dermoscopic features and is therefore limited in the diagnosis of very early and mainly featureless melanomas.
文摘脑梗塞和颅内出血是院外常见的病症,入院前将二者正确地区分开是十分重要的,因为涉及到不同的治疗、搬运措施,并对入院后的治疗有指导意义.现行区分两种患者的诊断计分体系需要大量的数据,而这些数据是急诊医生在院外诊断中并不容易获得的.为此,我们进行了一项研究,用院外易获得的临床和回顾性数据建立了一个模型,以帮助区分脑梗塞和颅内出血的主要诊断结果.＃Out-of-hospital diagnosis of cerebral infarction versus intracranial
