Partial or total transarterial ablation of arteriovenous malformations with alcohol proved effective for long-term cessation of hematuria. However, this procedure as well as transarterial embolization has the potential risk of nontarget infarction.

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Herein we describe a new method for cystoplasty, making use of the regenerating ability of the bladder. The contracted bladder is opened with a crucial incision and enlarged by placing thin paper covered with liquid synthetic resin (nobecutane) like a cap over the opened bladder tissue. Within 3 to 4 weeks granulated tissue completely covers the artificial cap, which is then removed transurethrally. Thereafter, the bladder regenerates on its own. The operation has been done at our hospital from 1970 to 1975 on 13 patients with contracted bladders owing to various pathologic conditions. Excellent results have been obtained on 11 patients with tuberculous contracted bladders. These 11 patients have regained normal bladder capacity and are able to void normally through the urethra. The technique has not been effective in 2 patients with interstitial cystitis, caused by generalized collagen disease in 1.

We experienced a case of a hepatic subcapsular hematoma after extracorporeal shock wave lithotripsy (ESWL) for a right renal stone. To our knowledge this presentation is the second case in the Japanese literature. A 63-year-old female with a right renal stone received 2,800 shots of 14.0 kilo-volts shockwave with Sonolith 3,000. Preoperative examination of the blood disclosed no abnormalities in the coagulating system except slight reduction of platelet count and slight impairment of liver function. Postoperative routine ultrasound echograms revealed a hepatic subcapsular hematoma although she had no symptom. The size of the hematoma measured 11.0 x 5.0 cm in computed tomograms (CT). She was carefully observed without any treatments because the hematoma did not increase in size. CT scans 6 months after the ESWL treatment demonstrated neither hematoma nor masses in the liver. As a complication of ESWL for urolithiasis a hepatic subcapsular hematoma is very rare. We herein presented the case and discussed the complications of ESWL briefly in the literature.

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