FIGURE 1.

Validation of categorisation by Doppler ultrasound pattern. (A) All cases were categorised by their vascular pattern using Doppler ultrasound according to the classification described by Giovagnorio et al. The type I group included 101 benign tumours and 22 malignant tumours. In contrast, type IV comprised 4 and 15 benign and malignant tumours, respectively. (B) Receiver-operating curve analysis of the Doppler ultrasound classification described by Giovagnorio et al. The efficacy of the type III and IV pattern for diagnosis of malignant tumours was evaluated. The area under the curve was 0.77.