Objective To investigate the efficacy of paracentesis using jugular vein indwelling catheter (Angiocath) in the treatment of simple renal cysts. Methods We retrospectively analyzed clinical data of 61 patients with simple renal cyst treated by Angiocath paracentesis combined with sclerosing agent injection under the guidance of ultrasonography. Results Fifty-two patients were cured on one session, while a recurrence was seen in 9 patients, among which 6 patients were cured by a re-paracentesis and 3 frequently recurrent patients were cured by the unroofing operation. No complications occurred except for 3 cases of mild transient hematuria. Conclusions Paracentesis using Angiocath in the treatment of simple renal cysts is minimally invasive, safe, effective and economical.

Objective To study the clinical application of ureteral grasping forceps in ureteroscopic operations. Methods A total of 74 cases treated under ureteroscope by using ureteral grasping forceps from April 2001 to July 2003 in this hospital was retrospectively analyzed. There were 25 cases of polyp resection and pneumatic lithotrity, 21 cases of rigid guidance through ureteral retortion, 19 cases of ureteral stricture dilation and ureteroscopic lithotrity, 3 cases of whole ureteral membranous obstruction, 3 cases of ascending shift of double “J” tube, 2 cases of intraoperative biopsy,4 cases of removal of double “J” tube with urethral stricture,and 2 cases of pneumatic lithotrity. Results The procedures were successfully accomplished in 69 cases.A conversion to open operation was required because of malfunction of ureteral grasping forceps in 1 case, and ureteral perforation occurred in 4 cases. Conclusions Ureteral grasping forceps is indispensable in ureteroscopic operations, which should be skillfully operated.

Molecular biology is the fundamental course of life science,and its experimental teaching is difficult to offer due to its long process and need of expensive equipments.Virtual laboratory platform is an important approach for practice teaching in recent years.This article discussed the advantages and requirements,provided the experience of its applying at our university,and suggested that virtual laboratory platform can play a key role in molecular biology experimental teaching.

Objective To investigate the relationship between serum phosphorus variability and mortality in maintenance hemodialysis (MHD) patients. Methods A total of 502 MHD cases from Renji hospital hemodialysis center were registered in Shanghai Registry Network from January 2007 to April 2015. They were recruited with general information, laboratory results and outcomes. According to their median of coefficient of variation (CV) of blood phosphorus, the patients were divided into high variation group (CV≥0.226 mmol/L) and low variation group (CV<0.226 mmol/L). The relationship of serum phosphorus CV with all?cause mortality and cardiovascular disease mortality was assessed respectively. Results The average age was (63.9±14.6) years, the median dialysis age was 82.0 (43.0, 139.0) months, 118 patients (23.5%) died for all cause and 64 patients (12.7%) died for cardiovascular disease. Compared with patients in low phosphorus variation group, patients had a higher all?cause mortality in high phosphorus variation group (27.7% vs 19.3%, P=0.028). Higher cardiovascular disease mortality was observed in high variation group as well, but this difference was no statistical significant (15.4% vs 10.0%, P=0.082). COX regression analysis showed that >60 years of age (HR=2.762, 95%CI 1.707?4.468, P<0.001), low hemoglobin (HR=0.466, 95%CI 0.317?0.686, P<0.001), low albumin (HR=0.555, 95%CI 0.366?0.840, P=0.005), high CV of phosphorus (HR=1.479, 95%CI 1.023 ? 2.139, P=0.037) were independent risk factors for all ? cause mortality. Moreover, >60 years of age (HR=2.666, 95%CI 1.469?4.837, P=0.001), low hemoglobin (HR=0.480, 95%CI 0.238?0.801, P=0.005), and high CV of phosphorus (HR=1.655, 95%CI 1.003?2.729, P=0.049) were independent risk factors for cardiovascular disease mortality. There was no significant statistical difference between patients phosphorus on target and patients phosphorus below target in all?cause disease mortality (P=0.065) and cardiovascular disease mortality (P=0.425). High variation group whose phosphorus on target had higher all?cause mortality and cardiovascular disease mortality than those in low variation group (29.2% vs 16.9%, P=0.047; 15.0% vs 6.0%, P=0.033). Kaplan?Meier method showed that patients with high phosphorus variation had higher all?cause (P=0.023) and cardiovascular disease mortality (P=0.047) than patients with low phosphorus variation. Conclusions The high CV of phosphorus is independently correlated with all?cause and cardiovascular disease mortality. Patients with standard ? reaching phosphorus in the low variation group have a lower mortality. A serum phosphorus level sustainably reaching the standard may improve the survival in MHD patients.