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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Quantitative characteristics, cell composition and cytoarchitectonics are characterized for lymph nodules in the walls of renal pelvis and ureter according to the findings in 14 total autopsied specimens of the pelvis and ureter obtained from 7 females and males aged 22-60. All of them had been killed in accidents and were free of urogenital, hematological, immune and lymphatic diseases. As indicated by histological sections, lymph nodules in the pelvic and ureteral mucosa of the examinees did not contain clear reproduction centers. The cells of the above lymph nodules comprised primarily small and medium-sized lymphocytes as well as reticular cells. Blast cells and macrophages were not numerous and averaged 2.6% of the total cell population. The count of cells undergoing destruction remained stable and made up from 1.57 +/- 1.6 to 3.52 +/- 2.06%. As for cytoarchitectonics, typical for the nodules was the existence of pairs, groups and chains of small and medium-sized lymphocytes.
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PMID:[The cell composition and cytoarchitectonic characteristics of the lymphoid formations in the kidney pelvis and ureter of adults]. 773 24

Facticious accumulation of the radiopharmaceutical in the urinary draining system as shown by routine renal tests, like technetium- 99m-diethylenetriamine pentacetic acid, technetium-99m-mercaptylacetyltriglycine or technetium-99m-glucoheptonate renograms can be re-evaluated by administering a diuretic, like furosemide (FS) and obtaining post FS dynamic and static images. Urinary tract obstruction can thus be identified. Partial urinary tract obstruction, the effectiveness of stenting, the effectiveness of obstruction correcting surgery and retroperitoneal lymph nodes, may be diagnosed after FS induced diuresis. However, factors like loss of the compliance of the renal pelvis or the ureter, low renal function, renal immaturity in neonates and full or neurogenic bladder limit the diagnostic effectiveness of FS. Diuretic enhanced Doppler sonography and dynamic contrast-enhanced magnetic resonance imaging can also be used for the evaluation of partial or complete urinary tract obstruction. The FS induced diuresis procedure is compared to other related diagnostic techniques.
Hell J Nucl Med
PMID:Furosemide for the diagnosis of complete or partial ureteropelvic junction obstruction. 2041 Nov 63

Objectives: To assess the effect of irrigation settings and the size of ureteral access sheath (UAS) on the maximal intra-pelvic pressure (IPPmax) during ureteroscopy (URS) in pigs. Materials and Methods: In supine position, three anesthetized female pigs underwent cystoscopy to insert a 6F ureteral catheter in each ureter. Pigs were then turned to prone position to establish a percutaneous access, insert a 10F nephrostomy tube in the kidney, and connect it to a urodynamic device. An 8F semi-rigid ureteroscope or the Flex-X2 Flexible Ureteroscope was used with two irrigation settings: gravity flow and manual pumping using a commercial pump. URS was performed without UAS and with the UAS 9.5/11, 12/14, 14/16 at the ureteropelvic junction and the IPPmax was recorded. Results: Under gravity irrigation, the recorded IPPmax during semi-rigid URS in the distal ureter and the renal pelvis was 0 and 30 cmH2O, respectively. Further, the IPPmax during flexible URS in the renal pelvis without UAS, with UAS 9.5/11.5, with UAS 12/14, and with UAS 14/16 was 23, 6, 2, and 1 cmH2O, respectively. Under manual pumping, the IPPmax during semi-rigid URS in the distal ureter and the renal pelvis was 84 and 105 cmH2O, respectively. Further, the IPPmax during flexible URS in the renal pelvis without UAS, with UAS 9.5/11.5, with UAS 12/14, and with UAS 14/16 was 45, 46, 18, and 1 cmH2O, respectively. Conclusion: Manual pumping can significantly increase the IPPmax to unsafe levels during URS. The UAS can significantly decrease the IPPmax, even under manual pumping. The larger the UAS, the lower the IPPmax. The use of UAS can render URS safer by acting as a safeguard against the consequences of increased IPP, even under forced irrigation.
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PMID:The Effect of Irrigation Power and Ureteral Access Sheath Diameter on the Maximal Intra-Pelvic Pressure During Ureteroscopy: In Vivo Experimental Study in a Live Anesthetized Pig. 3126 60