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Y Imaide

Publications and source records attributed to Y Imaide.

12 recordsLinked to original sources
PubMed1998

[2,8-dihydroxyadenine urolithiasis due to partial deficiency of adenine phosphoribosyltransferase: a case report].

A 35-year-old female was referred to our clinic with a complaint of left flank pain in 1993. Drip infusion pyelography showed a filling defect of 25 x 24 mm in size in the left ureteropelvic junction. Computed tomography and ultrasonography revealed it as the renal stone. Percutaneous nephroureterolithotomy and extracorporeal shock-were lithotomy were performed. The stone was composed of 2,8-dihydroxyadenine (DHA). The patient was diagnosed as having a partial deficiency of adenine phosphoribosyltransferase (APRT) from the low APRT activity and a genotype of a compound heterozygote APRT*J/APRT*Q0 by T-cell analysis. The urinary excretion of 2,8-DHA crystals disappeared by the postoperative treatment with allopurinol. Cases of 2,8-DHA urolithiasis reported in the Japanese literature are discussed.

Adenine↗
PubMed1995

Percutaneous cryosurgery for renal tumours.

OBJECTIVE: To evaluate the use of percutaneous cryosurgery in the treatment of renal tumours. MATERIALS AND METHODS: A cryoprobe using liquid nitrogen was designed. The tolerance of renal cancer cells to cooling was tested. Freezing tests on two extirpated kidneys involved with hypervascular tumour were performed in water at 40 degrees C. A clinical trial of percutaneous cryosurgery was carried out in two patients with advanced renal carcinoma. RESULTS: The cooling function of the new probe was similar to that of a conventional probe. The tolerance test on renal cancer cells showed that the cooling temperature should be below -20 degrees C to render them necrotic. Freezing tests on two nephrectomized kidneys with hypervascular renal cancer suggested that embolization of the renal artery might be advisable before treatment. The clinical trial in two patients with advanced renal carcinoma showed that the whole kidney, including the tumour, became necrotic and shrunken post-operatively. The patients' Karnofsky performance scale showed a marked improvement 3 months after the operation, but their general condition gradually deteriorated. Patient 1 died 10 months and patient 2 died 5 months after the procedure. CONCLUSION: Percutaneous cryosurgery was performed successfully in two patients with hypervascular renal tumours. Cryo-immunological activity was assumed to have contributed to the temporary improvement in their condition. These results suggest that percutaneous cryosurgery might be useful as minimally invasive treatment in a limited number of patients with advanced renal carcinoma.

Aged↗
PubMed1995

[Clinical implication of selective renal tumor biopsy].

Since 1982, we have performed selective needle core biopsy under ultrasonic real time guidance for the specially indicated cases with a suspected renal tumor. Between June 1982 and April 1994, 100 renal tumor cases were examined by biopsy with a success rate of 97%. We evaluated 63 cases of renal cell carcinoma, 7 cases of transitional cell carcinoma, 2 cases of metastatic carcinoma, and 25 cases of benign lesions such as angiomyolipoma and hemorrhagic cyst. In 3 cases no tissue was obtained. No complications occurred except for dissemination in only one case of angiomyoliposarcoma. Recently incidental renal tumors tend to increase more and more, and small incidental renal tumors may have a high possibility of benign tumor compared with symptomatic renal tumor. Selective renal tumor biopsy may be valuable in the diagnosis of an incidental renal tumor which is difficult to differentiate between malignant tumor and benign tumor by several imaging methods. From our experiments and other reports, the clinical implication of renal tumor biopsy is discussed.

Aged↗
PubMed1994

[Endoscopic adrenalectomy by retroperitoneal approach for primary aldosteronism].

Endoscopic adrenalectomy by a retroperitoneal approach through the skin incision less than 5 cm has been performed in 6 patients (3 males and 3 females; 4 right and 2 left side) with primary aldosteronism from December 1992 to June 1993. The treatment was successful in all the cases. As for complications, pneumothorax occurred in one case. The required operation time was from 120 to 330 min (mean: 196 min) and the blood loss was from 20 to 279 ml (mean: 94 ml), which were similar to those in open adrenalectomy. The retroperitoneal approach was thought to be more advantageous than widely adopted laparoscopic adrenalectomy in the following points: (1) No complications such as pulmonary embolism or pneumomediastinum. (2) No injuries to the intraabdominal organs. (3) Two operators using one video system is sufficient.

Adenoma↗
PubMed1993

[Clinical experience of endopyelotomy].

From July 1986, percutaneous endopyelotomy was performed on a total of 12 patients (13 kidneys) including 8 males and 4 females with ureteropelvic junction (UPJ) obstruction. Of the 13 kidneys, 9 had primary UPJ obstruction and 4 had secondary UPJ obstruction. A rigid urethrotome (cold knife) was employed in 12 cases and a flexible electorotome (hot knife) in one case. A stent ureteral catheter was placed for 3 to 31 weeks after the procedure. The outcome was evaluated by radiography and urodynamic examinations. A successful outcome was obtained in 8 of 9 kidneys with primary UPJ obstruction and in 1 of 4 kidneys with secondary UPJ obstruction. These findings suggest that percutaneous endopyelotomy is useful in the treatment of primary UPJ obstruction.

Adolescent↗
PubMed1990

[Vesico-prostatic calculi treated by microexplosion lithotripsy: a case report].

A 48-year-old male suffering from neurogenic bladder due to spinal injury was admitted to our clinic with a chief complaint of macrohematuria. Examinations revealed some calculi located in the bladder and in the prostate. Microexplosion lithotripsy for the prostatic calculi (29 x 23 mm etc.) was performed via the urethra and for the vesical calculus (65 x 55 mm) via the suprapubic cystostomy channel. The calculi were fragmented and removed out completely.

Calculi↗
PubMed1988

Microexplosion cystolithotripsy in 105 cases.

We treated 105 consecutive patients with bladder calculi by microexplosion lithotripsy, with a success rate of 100 per cent. The weight of the removed calculi averaged 18 gm., with a range of 2 to 305 gm. For the procedure spinal anesthesia was used in 78 patients, while general anesthesia was used in 24. Minor extraperitoneal bladder perforation occurred only once and it resolved spontaneously several days later. Presently, we consider microexplosion lithotripsy to be the treatment of first choice for bladder calculi.

Adolescent↗
PubMed1986

[Effect of the administration of liver extract after surgical operations in urology].

The effect of liver extract administered to 22 patients after urological operations was evaluated with reference to 19 controls. No significant difference was observed between the cases and the controls. We rather supposed, however, that the liver extract was effective as a liver protection drug, because the results of liver function in the cases were less changed than the controls throughout the post-operative course.

Adult↗