[Epidemiological study on urolithiasis in Mie Prefecture. 1. Present status in 1985]

Area of Science:

• Urology
• Nephrology
• Epidemiology

Context:

• Urolithiasis prevalence and characteristics in Mie Prefecture, Japan, were assessed in 1985.
• Analysis included 1,314 patients from 17 Urology and 2 Medicine departments.
• Geographical and demographic factors influencing stone incidence were examined.

Purpose:

• To determine the current status of urolithiasis in Mie Prefecture.
• To identify demographic, geographic, and etiological factors associated with urinary tract calculi.
• To evaluate current treatment modalities for urolithiasis.

Summary:

• The study found a male-to-female ratio of 2.6:1 for urolithiasis, with peak incidence in males in their forties and females in their fifties.
• Most stones (96.9%) were located in the upper urinary tract, predominantly composed of calcium oxalate/phosphate (84.0%).
• Incidence was highest in Iinan county, with similar rates in urban and rural areas, and a seasonal increase observed in summer.

Impact:

• Provides baseline epidemiological data on urolithiasis in Mie Prefecture.
• Highlights the prevalence of upper urinary tract calculi and calcium-based stones.
• Informs public health strategies and clinical management of kidney stones in the region.