Soung Yong Cho

Clinical experience of single-session percutaneous aspiration and OK-432 sclerotherapy for treatment of simple renal cysts: 1-year follow-up.

PURPOSE To evaluate the efficacy and safety of single-session OK-432 sclerotherapy for the treatment of renal cysts. MATERIALS AND METHODS From October 2005 to November 2006, 48 patients (61 simple renal cysts) were included in the study. Indications were determined as flank discomfort (n = 37) or patient reassurance due to increasing size (n = 11). The simple renal cysts were aspirated under ultrasonography (US), at which point OK-432 was injected into the cyst. Follow-up was performed with US or computed tomography scan every 3 months until 1 year. Complete regression of the renal cyst or more than 70% reduction in size with no symptoms indicated a successful treatment. RESULTS Among 61 renal cysts of 48 patients, the overall success rate was 98.4%. Complete regression occurred in 46 cysts (75.4%), and more than 90% reduction in size occurred in 6 cysts (9.8%). A size reduction of 80% to 90% and 70% to 80% occurred in five (8.2%) and three cysts (4.9%), respectively. A size reduction less than 70% occurred in only one cyst (1.6%). The success of cyst regression was correlated with cyst volume. Clinical symptoms resolved in 100% of patients with symptomatic cysts, and there was no enlargement of the aspirated cysts at the 1-year follow-up. After the procedure, there were only some minor complications, such as mild fever, flank pain, and leukocytosis, which subsided with the conservative treatment. CONCLUSIONS Percutaneous OK-432 sclerotherapy is simple, safe, and effective, and it can be an alternative first-line therapy for simple renal cysts.

Relationship between Prostate-Specific Antigen and Body Mass Index according to Age: Lower Prostate-Specific Antigen in Middle-Aged Overweight and Obese Korean Men

Objective: To analyze the relationship between serum prostate-specific antigen (PSA) and body mass index (BMI) according to age in a population of ostensibly healthy Korean men. Patients and Methods: Between 2002 and 2006, data from 13,025 men who visited health promotion centers were evaluated. All men underwent anthropometric measurements and serum PSA determination. The relationship between serum PSA and BMI according to age was analyzed. Results: The median age was 50.0 years and the median serum PSA level was 0.69 ng/ml. There was no relationship between serum PSA and BMI in the group whose BMI was <23 kg/m2. The serum PSA showed a significant inverse relationship in those with BMI of ≧23 kg/m2. However, this finding was only true among 40- to 59-year-old middle aged men and no such relationship between serum PSA and BMI was seen in the older groups (60–79 years of age). Conclusion: Our study revealed serum PSA had a significant inverse relationship with BMI in overweight and obese men aged between 40 and 59 years; however, there was no relationship between serum PSA and BMI in men whose age was older than 60 years.