[A Case of Venous Malformation that Occurred in the Retroperitoneum].

A 70-year-old man complaining of pain in his right leg presented to the Department of Orthopedics in our hospital. X-ray findings revealed calcifications around the left kidney. He was referred to our department for further examination.

[Pharmacotherapy for preventing calcium containing stone formation].

Many urinary tract stones consist of calcium, and has high relapse rate. Accordingly, it is very important to prevent calcium-containing stone formation. This paper describes about effects and mechanisms for Xanthine oxidase inhibitor, citrate formulation, magnesium formulation, thiazides, vitamin B(6), extract of Quercus salicina Blume and chorei-to (medical herb) .