Operative versus nonoperative management of ureteropelvic junction obstruction in children.

Objectives: To describe and validate our strategy for treating patients with ureteropelvic junction obstruction operatively or nonoperatively according to ultrasonography and nuclear renal scan findings.

Methods: A retrospective analysis of 243 patients from 1999 to 2006 with grade 3-4 hydronephrosis was performed. Depending on the grade of hydronephrosis with parenchymal thinning on ultrasonography and renal function on the nuclear renal scan, patients were treated with immediate pyeloplasty, pyeloplasty after a period of observation, or observation only.

Hydronephrosis in a woman undergoing in vitro fertilization.

Obstruction of a ureter secondary to tumor, fibrosis, or inflammation has been well documented in published reports. A review of English studies revealed no reported cases of hydronephrosis of a native kidney resulting from hyperstimulation of an ovary. We report a case of hydronephrosis in a woman undergoing ovarian stimulation for in vitro fertilization.

Screening and identification of differentially expressed transcripts in circulating cells of prostate cancer patients using suppression subtractive hybridization.

Background: Tumor metastasis and changes in host immunosurveillance are important components in cancer development. Tumor cell invasion into the bloodstream is an essential step for systemic metastasis. Currently, the detection of tumor cells in the circulation is mainly dependent upon the utilization of known epithelial cell markers.