Luminal mapping reveals mesenteric predominance of colonic adenomas and adenocarcinomas.

Background: Previous studies have examined the relationship between colorectal tumor distribution and metastasis, but the tumor luminal location and associative risk factors promoting tumor growth remain unknown.

Methods: In this study, we mapped the luminal distribution of human colonic adenomas/adenocarcinomas and their association with various physiologic parameters.

Results: We identified a mesenteric predominance for colonic adenomas and adenocarcinomas.

Avoiding colorectal resection for polyps: is CELS the best method?

Background: A significant proportion of colonic polyps are unsuitable for endoscopic removal. A combined endoscopic and laparoscopic approach is an alternative to conventional polypectomy or resection. In this review, we set out to determine whether avoiding segmental resection for benign colonic polyps was a viable option through combined endolaparoscopic surgery (CELS).

Urothelial-cell carcinoma and solitary kidney: outcomes with renal-sparing management.

Purpose: To review our experience with renal-sparing approaches for upper-tract transitional-cell carcinoma (UT-TCC) associated with solitary kidneys.

Patients And Methods: Ten patients with UT-TCC associated with solitary kidneys who were managed with renal-sparing approaches from 2000 to 2004 were identified. Patient data were gathered retrospectively, and a patient interview was conducted.

Load-release points of two novel ureteral stone-trapping devices.

Purpose: We compared the load-release points of the Stone Cone and the new Cook Urological NTrap devices using an in vitro model of the ureter.

Materials And Methods: A strictured-ureter model was created using urethane tubing with a wire tie around it. A plastic bead was lodged above this narrowing.

Endoscopic injection of fibrin glue for the treatment of urinary-tract pathology.

Background And Purpose: Urinary-tract fistulas present unique clinical challenges that often necessitate open surgical excision with interposition of healthy tissue. Advances in retrograde instrumentation have enabled endourologists to employ more minimally invasive approaches to urologic disease, including fistulas. We reviewed our experience with endoscopic injection of fibrin glue for the treatment of urinary-tract pathology.

Assessment of novel ureteral occlusion device and comparison with stone cone in prevention of stone fragment migration during lithotripsy.

Purpose: To present the initial ex-vivo results of a new ureteral-occlusion device (Cook Urological, Spencer, IN) for preventing the retrograde migration of particles during ureteroscopy and its comparison with the Stone Cone (Microvasive-Boston Scientific Corp., Spencer, IN).

Materials And Methods: We designed an ex-vivo model using a porcine kidney with an intact ureter.

Retroperitoneal schwannoma mimicking an adrenal lesion.

Schwannomas are usually benign tumors that arise from the nerve supporting the Schwann cell. The majority arise at the cranial nerves or nerves of the upper extremities. Most patients with retroperitoneal schwannomas present with vague abdominal or back pain.