Objective To gain accurate imaging i nformation of biliary tract after surgery. Methods The biliary tract of 170 cases after s urgery had been observed dynamically from different directions for longer time. The results of data on biliary tract change were stored in disc, or picture. Results Of 170 cases, 120 cases were cured with out any abnormal change on cholangiography, and then the T-tube was removed. Of another 50 cases, 30 cases revealed remnant stone on cholangiography, 9 cases s howed inflammatory stricture of biliary tract, 4 cases displayed common bile duc t tumor, and 7 cases had false filling-defect. Then, the results were further c onfirmed by sonography, CT, choledochoscopy, and operation. Conclusion The dynamic observation of biliary tract by T-tube cholangiography after surgery is usual way that is handy, pract ical, painless, and economic.

OBJECTIVETo determine the effect of obesity on prostate specific antigen (PSA) in men with benign prostatic hyperplasia (BPH) and develop a PSA-related parameter that can eliminate the effect of obesity.

METHODSWe reviewed the clinical data of 706 patients with BPH. Two PSA-related parameters, namely PSA mass (total circulating PSA protein) and PSA mass ratio (total circulation PSA protein per prostate volume), were calculated for all the patients and the association of BMI with PSA, PSA mass, and PSA mass ratio was assessed.

RESULTSA higher BMI was significantly associated with a greater plasma volume and prostate volume (P<0.05). Linear regression analysis revealed a greater adjusted R2 of BMI versus plasma volume than of BMI PSA (0.569 vs 0.027). PSA was positively associated with the prostate volume and negatively with BMI and plasma volume (P<0.05). PSA mass was positively associated with prostate volume (P<0.05) but was not associated with BMI or plasma volume (P>0.05). PSA mass ratio was not associated with prostate volume (P>0.05) but negatively associated with BMI and plasma volume. Plasma volume and prostate volume, PSA, and PSA mass ratio (P<0.05), but not PSA mass (P>0.05), differed significantly among normal-weight, overweight, and obese patients.

CONCLUSIONA higher BMI is associated with a greater plasma volume in BPH patients. In obese patients with BPH, a lower PSA concentration may result from hemodilution caused by a greater plasma volume, and PSA mass can eliminate the effect of obesity on PSA.

Body Mass Index ; Hemodilution ; Humans ; Male ; Obesity ; pathology ; Organ Size ; Overweight ; pathology ; Prostate ; pathology ; Prostate-Specific Antigen ; blood ; Prostatic Hyperplasia ; diagnosis ; Prostatic Neoplasms ; diagnosis