Objective To investigate the diagnostic value of prostate specific antigen density (PSAD),Gleason score and serum ferritin (SF) in bone metastases from prostate cancer.Methods 45 patients diagnosed with bone metastases from prostate cancer in our hospital from January 2015 to October 2017 were selected as metastasis group.90 cases without bone metastases in prostate cancer were selected as control group.The PSAD,SF and Gleason scores of the two groups were measured and compared.Receiver operating characteristic (ROC) curve was used to analyze the three indexes to predict the clinical value of bone metastases in patients with prostate cancer.Results The serum PSA,SF,prostate volume,PSAD levels in metastasis group were significantly higher than those in the control group,with statistically significant difference (P ＜ 0.05);the average Gleason scores metastasis group were significantly higher than the control group (P ＜ 0.05);The sensitivity and specificity of SF combined with PSAD and Gleason score diagnosis in patients with prostate cancer bone metastasis was 95.64％ and 91.30％ respectively,the area under the curve (AUC) value is 0.930.Conclusions Detection and analysis of PSAD,SF,and Gleason scores in patients with prostate cancer will help to evaluate whether or not the patients have bone metastases.

Objective To confirm whether strain ratio should be added after evaluation of lesions with 5-point elasticity scoring for differentiating breast lesions on ultrasonic elastography(UE).Methods Eight hundred and forty-six consecutive female patients with 1 071 breast lesions were recruited into a multicenter retrospective study,which involved 8 centers across China.All the patients underwent the UE procedure and the strain ratios were calculated.The sensitivity,specificity,accuracy,PPV and NPV were calculated for each of the two evaluation systems and the areas under the ROC curve were compared.Results The strain ratios of 559 benign lesions(2.7±1.4)and 512 malignant lesions(8.1±5.9)were significantly different (P<0.001).When the cutoff point was 3.03,strain ratio method had 81.6% sensitivity,89.7% specificity,81.7% accuracy,80.2% PPV and 84.2% NPV.The areas under the ROC curve with the strain ratio method and 5-point scoring method were 0.865 and 0.862,respectively(P =0.622).For the lesions with elasticity score 3 and 4,the areas under the ROC curve of the two Methods were 0.71 1 and 0.629, respectively(P = 0.020).Conclusions Although the two UE Methods have similar diagnostic performance,separate calculation of the strain ratios seems compulsory,especially for the lesions with elasticity score 3 and 4.

Madelung's disease is more common in male patients who drink alcohol. It can affect many parts of the body, but rarely affects scrotum. A case of Madelung's disease involving the scrotum was reported. The scrotum tumor was removed by operation and good results were obtained. No recurrence was found in the follow-up of 14 months. Surgical resection could be an effective treatment for this disease.