佐藤 仁大¹, 葛西 勲³, 呉 幹純², 斎藤 一巳¹, 中条 弘隆³, 須山 一穂², 小野 典之¹, 宇都宮 拓治³, 神崎 政裕²

Masatomo SATOH¹, Isao KASAI³, Mikitosi GO², Kazumi SAITOH¹, Hirotaka NAKAJIYOU³, Kazuho SUYAMA², Noriyuki ONO¹, Takuji UTHUNOMIYA³, Masahiro KANZAKI²

¹大分泌尿器科病院臨床検査部, ²大分泌尿器科病院泌尿器科, ³北里大学医学部泌尿器科学教室

¹Department of Clinical Laboratory, Oita Urological Hospital, ²Department of Urology, Oita Urological Hospital, ³Department of Urology, Kitasato University, School of Medicine

キーワード : ESWL, Ureteral calculi, Ultrasonic localization

EDAP LT-01, a second-generation extracorporeal shock wave lithotripsy device, was used for in situ treatment of ureteral calculi and evaluated for its effectiveness in delineating stones and its therapeutic efficacy.
Involved in this retrospective study were 288 patients, or 295 stones, who were diagnosed with ureteral calculi on both X-ray and ultrasonography at our hospital during the period from August 1988 through December 1989.
Upper ureteral calculi were sought by continuously following a hydroureter or using the lower pole of the kidney, the transverse processes of lumbar vertebrae, or the pelvis as landmarks with the patient held in supine, lateral recumbent or oblique (with a tilted bed) position. Middle ureteral calculi were sought with the patient in a prone position using the iliac artery and vein as a landmark. Lower ureteral calculi were sought with the patient in a prone position using a full-bladder technique in all cases.
Using the method described above, a self-contained probe detected 286 (96.9%) of 295 stones which had been detected with a hand probe. Clinical success (complete discharge of stones or stone fragments of less than 4 mm (diameter) was achieved in 268 (93.7%) of 286 cases of urinary stones which received ESWL.
These results clearly indicate that EDAP LT-01 is a highly useful means of treating ureteral lithiasis in situ.