Objective To investigate the clinical significance of prostate specific antigen density (PSAD)value in the differential diagnosis from malignant and benign prostate disease .Methods 56 patients who enrolled in this hospital during April 2008 to No-vember 2012 were reviewed ,all of them were suspected as prostate carcinoma with free total PSA value at 4-10 ng/mL .Prostate volume were determined via transrectal ultrasound ,while serum PSA was determined by chemiluminescence method ,and all patients were finally pathologically diagnosed via tissue biopsy or prostatectomy .21 cases were proved to be prostate carcinoma (prostate carcinoma group) ,and the other 35 cases were proved to be benign prostate hyperplasia(BPH) .And the statistical significances of tPSA ,prostate volume and PSAD values were compared between the two groups .Results Compared with BPH group ,serum level of tPSA was insignificant ,while the values of prostate volume and PSAD were significantly lower in the BPH group than in prostate carciboma group .Considering the mean prostate volume(39 .27 mL) as the reference point ,40 mL was set as the cut-off value of prostate volume .Therefore ,there were 80 .95% prostate carcinoma group patients whose prostate volume were less than 40 mL , and 68 .57% benign prostate hyperplasia group patients whose prostate volume were larger than 40 mL .Considering the PSAD val-ue(0 .147) as the reference point ,0 .15 was set as the cut-off value of PSAD .Therefore ,the sensitivity ,specificity ,positive predic-tive value and negative predictive value among patients with prostate volume less than 40 mL ,the datas were respectively as 80 .95% ,72 .73% ,85% and 61 .54% .While ,among patients with prostate volume larger than 40 mL ,were respectively as 75% , 66 .67% ,27 .27% and 94 .11% .Conclusion PSAD was of certain value in the differential diagnosis of prostate carcinoma in PSA gray zone cases .If PSAD=0 .15 was consider as the cut-off point ,the sensitivity and specificity of differential diagnosis for prostate carcinoma decreased as the prostate volume increase .However ,the influencing factors are still to be elucidated .

OBJECTIVE: To study the clinical value of polysomnography (PSG) and ApneaGraph (AG200) in the diagnosis evaluation of obstructive sleep apnea hypopnea syndrome (OSAHS). METHOD: From January to December in 2012, 67 OSAHS patients diagnosed by PSG were examined by AG200. The apnea hypopnea index (AHI), hypopnea index (HI), apnea index (AI), the lowest oxygen saturation (LSaO2) was were detected and the results were analyzed statistically. RESULT: Significant differences were observed in AI, AHI, LSaO2 between AG200 and PSG (P < 0.05, respectively). No statistically significant difference was found in HI. The differences in HI between AG200 and PSG were not significant (P > 0.05). AHI, HI and LSaO2 was were significantly correlated between AG200 and PSG (r = 0.870, 0.743, 0.374, 0.716, P < 0.01). CONCLUSION AG200 could not replace PSG but could identify the level of upper airway obstruction.
Female ; Humans ; Male ; Polysomnography ; methods ; Sleep Apnea, Obstructive ; diagnosis ; physiopathology

Objective To analyze the value of cerebral coronary view of nose tip deflection in screening fetal facial deformity in the first and second trimester. Methods All cases were divided into the 11～12+6 weeks, the 13 ～ 14+6 weeks and the 15 ～ 16+6 weeks undergone ultrasonographic examination on coronal view of nose tip deflection. The display of fetal facial structure and the detection rate of fetal facial malformation were analyzed. Results The fetal facial anatomic structures were clearly displayed. The median sagittal section ,eyes level coronal section ,retronasal triangle section ,or other sections were satisfactory in 4855 cases (97.10％). There was no Statistical difference in the display of fetal facial structures among the three groups. 69 fetus were found with facial malformations,including 31 fetus with facial malformations only,and 38 fetus combined with other abnormal struc-tures. The sensitivity,specificity,positive predictive value and negative predictive value were 93.24％,100％, 100％ and 99.90％ respectively. Conclusion The cerebral coronary view of nose tip deflection method has high detection rate and sensitivity,and is a reliable method for detecting fetal facial abnormalities in the first and second trimester.

Ferroptosis is a non-apoptotic regulated cell death caused by iron accumulation and subsequent lipid peroxidation. Currently, the therapeutic role of ferroptosis on cancer is gaining increasing interest. Baicalin an active component in