Urology
-
Although invasive and expensive, the pressure-flow study is known as the reference standard for the diagnosis of bladder outlet obstruction. We investigated the usefulness of ultrasound-estimated bladder weight (UEBW) as a predictor of the need for surgery for benign prostatic hyperplasia (BPH). ⋯ The results of our study have shown that the UEBW can be regarded as a useful parameter to identify patients with LUTS who are at risk of needing surgery for BPH.
-
Screening for prostate cancer using serum prostate-specific antigen (PSA) determination has a positive predictive value of only 30% to 42% for a PSA level between 4 and 10 ng/mL. Magnetic resonance spectroscopic imaging (MRSI), which identifies cancer on the basis of changes in cellular metabolite levels, might be able to identify patients with noncancerous PSA elevation and help avoid unnecessary biopsies. We tested this hypothesis by evaluating the incidence of prostate cancer in men with a PSA level of 4 to 10 ng/mL and a negative MRSI study. ⋯ The results of our study have shown that prostate biopsy can be deferred in patients with an increased serum PSA of 4 to 10 ng/mL if their MRSI does not show any malignant voxels.
-
To examine the differences in ureteral dilation and calculus size between obstructing proximal and distal ureteral stones. ⋯ The results of our study have shown that proximal ureteral calculi are associated with a significantly greater degree of ureteral dilation and larger coronal length than are distal calculi. These findings should guide the endoscopist in planning intracorporeal ureteroscopic lithotripsy. We suggest obtaining CT coronal images to more accurately characterize obstructing ureteral stones.
-
To examine the referral patterns of hematuria within a nonprofit healthcare organization to determine the factors that influence referral. Hematuria continues to be an important sign of urologic disease, including urothelial malignancy. An increasing awareness of gender differences in tumor stage at bladder cancer presentation has led to speculation about delayed referral and diagnosis in women. However, little is known about the referral patterns of hematuria and whether gender differences exist. ⋯ Primary care physicians practicing in a managed care setting are less likely to refer women for a urologic evaluation of new or first recurrent episodes of hematuria than to refer men in all patient age categories, except for 40-49 years. This apparent gender disparity could result in unequal access of specialty evaluation and could potentially delay the diagnosis of important urologic conditions.