Yoshihisa Tasaki

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PURPOSE Lower pole renal stones are well known to show a poor stone clearance rate after extracorporeal shock wave lithotripsy (ESWL) (Dornier Medical Systems, Marietta, Georgia). In the current study we analyzed several anatomical factors as predictors of lower pole stone clearance that may be used to indicate the usefulness of ESWL in such patients. (More)
INTRODUCTION The purpose of the present study was to compare the incidence of inguinal hernias after conventional and minilaparotomy (minilap) radical retropubic prostatectomy (RRP). PATIENTS AND METHODS In this retrospective study, we review our experience with 70 consecutive patients with prostate cancer who underwent prostatectomy from April 1995(More)
We report 2 cases of simple renal cysts which were marsupialized with 2 laparoscopic approaches involving either transperitoneal, with reflection of the colon medially or dissection through the mesocolon, and a case of a multilocular renal cyst which was treated by the retroperitoneal approach. Although laparoscopic unroofing of a renal cyst is a safe and(More)
In this study, the effects of controlled tissue expansion on the survival of unipedicled venous flaps were investigated in rats. In three groups of Lewis rats, a 3 x 6 cm unipedicled Lateral thoracic venous flap was studied with group 1 as control group (n = 30) without any manipulation, group 2 (n = 30) where an expander was introduced under the flap area(More)
A new composite free-flap model, namely, the saphenous artery osteomyocutaneous flap, is described in the rat. This is a true osteomyocutaneous flap composed of a skin island from the medial aspect of the lower leg, the gracilis and semitendinosus muscles, and a bone segment from the tibia based on the saphenous vascular pedicle. After anatomic studies in(More)
The cutaneous vascular anatomy of the proximal one-half of the dorsum (the thoracic region) and its role in flap design was studied in the rat. The investigation included anatomical dissection, ink injection into the axial artery, and flap harvesting in live animals. Anatomical dissection and india ink injection of the thoracic region revealed that the skin(More)
Cutaneous vascular anatomy of the flank and the hip was studied in the rat. Investigation was done by anatomical dissection, ink injection to the axial artery and flap harvesting in living rats. Anatomical dissection and India ink injection revealed that the rat's flank and hip skin derives its blood supply from the iliac branch of the iliolumbar artery,(More)
Venous drainage is vital for successful replantation, but it is not always possible to reconstruct because of missing or damaged veins. We devised an experimental model to study venous drainage through bone marrow while the new subcutaneous venous system regenerated. Adult male Wistar rats were placed into three groups. Group A rats had their hindlimbs(More)
Large cell neuroendocrine carcinoma (LCNEC) of the urinary bladder is very rare. Definite treatment strategy has not been established and prognosis of the disease is not clear yet. We report a case of primary LCNEC of the urinary bladder here with some review of the literature. The patient was a 84-year-old man. He underwent transurethral resection of(More)