Objective To explore the clinical characteristics and treatment in elderly patients with gastric bezoars. Methods Totally 49 patients with gastric bezoars were retrospectively analyzed,and among them,36 patients were aged 65-77 years, 48 cases underwent sequential therapy,1 elderly patient underwent surgical operation. Results There were differences in etiology, medical histories, clinical manifestations and therapeutic efficacy between elderly and non elderly patients with gastric bezoars.There were 42％ (15/36) of elderly patients eating glutinous rice cakes,4 cases with gastric surgery histories,6 cases with diabetes in elderly patients,but in non eldcrly patients only 8％ (1/13) of patients eating glutinous rice cake,and there were no cases with surgery histories and diabetes. Gastric bezoars in 48 cases were cleared away by sequential therapy. 1 elderly patient developed intestinal obstruction after surgical operation and died of infectious shock. Conclusions There are some different characteristics between elderly and nonelderly patients with gastric bezoars.Sequential therapy is safe and effective for elderly patients with gastric bezoars.

Objective To explore dynamic changes of renal cortex blood perfusion in Goto-Kakizaki rats(GK rats) by contrast-enhanced ultrasonography.The clues for early diagnosis and intervention of diabetic renal impairment may be obtained from the study.Methods Male GK rats were taken as experimental groups,and Wistar male rats were used as controls.Contrast-enhanced agent SonoVue was administered via the femoral vein cannulation in a bolus fashion.Image changes of renal cortex were observed in real time, and dynamic image changes within 0 - 5 minute after injection were observed and stored.The renal cortex blood perfusion changes were analyzed using the time-intensity curve (TIC).Results (1) The kidney was quickly enhanced after the injection of contrast agent.The renal artery, cortex, renal vein were displayed in sequence.(2)The shape of renal perfusion TIC in all the objects was a single peak,steep ascending, flat descending curve.The overall shape of TIC in GK rats was wider than controls and they were wider and wider with age increasing of the GK rats.(3) Compare to controls,the time to peak (TTP)and the half time of peak descending (HDT) in GK rats was longer (P ＜0.01), the slope rates of the ascending curve (S1) and the slope rates of the descending curve (S2) decreased and the area under the curve increased in 12-week-old and 20-week-old GK rats (P ＜ 0.05 or P ＜ 0.01).Conclusions The abnormal blood perfusion of renal cortex microcirculation was present in the early stage of diabetic in GK rats.Real-time contrast-enhanced ultrasonography and TIC could display this change effectively.