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Biomedical subjects

M Takaha

Publications and source records attributed to M Takaha.

At least 91 records · Page 5Linked to original sources
PubMed1987

[Percutaneous nephrolithotripsy: a report of 50 cases].

Fifty patients with renal (33 patients), renal and ureteral (4 patients) and ureteral (13 patients) stones were treated by percutaneous nephrolithotripsy (PNL) between November 15, 1984 and December 14, 1985. Complete stone removal was achieved in 39 cases (78%). Four of the 11 cases of incomplete stone removal were among the first 5 cases we treated. We have not experienced any severe complications in our 50 cases. The cause of the unsuccessful attempts, complications and other factors of PNL are briefly discussed.

Adult↗
PubMed1987

Extra-adrenal pheochromocytoma manifesting renovascular hypertension.

A case with extra-adrenal pheochromocytoma, which was found by chance in the course of renovascular hypertension, is reported. The tumor was on the stenotic portion of the right renal artery. The results of examinations for pheochromocytoma were not conclusive, that is, inconsistent elevation of plasma catecholamines and urinary catecholamine excretion, equivocal results of pharmacological tests for pheochromocytoma, and negative results in [131I]metaiodobenzylguanidine scintigraphy. The stenosis of the right renal artery disappeared, the blood pressure was normalized by surgical resection of the tumor, and the extra-adrenal pheochromocytoma was finally diagnosed by pathohistological findings. Renovascular hypertension appeared to be the primary cause of this hypertension, judging from the significant decrease in blood pressure induced by an angiotensin II analog and a renal vein renin ratio of 7.3. Even in the case of obvious renovascular hypertension, the possibility of this unusual coexistence with pheochromocytoma should be considered.

Adult↗
PubMed1986

Retroperitoneal schwannoma.

A case of retroperitoneal benign schwannoma is presented; in addition, 133 cases of retroperitoneal schwannoma reported in Japanese literature are studied. In our series 66 per cent of the cases were found to be cystic. Therefore, the cystic change may be one of the preoperative features of schwannomas, because other types of retroperitoneal tumor do not frequently form cysts. Furthermore, the necessity of postoperative electron microscopy for accurate histologic diagnosis is discussed.

Adult↗
PubMed1986

Reno-colic-cutaneous fistula.

A case of reno-colic-cutaneous fistula is presented. Of several diagnostic methods, fistulography combined with computerized tomography was the most useful to locate the precise anatomical site of involvement. Total nephrectomy, resection of the descending colon and excision of the retroperitoneal abscess were successfully performed.

Colonic Diseases↗
PubMed1986

Cavernous hemangioma of scrotum and penile shaft.

We report a 13-year-old boy with two independently detected cavernous hemangiomas of the scrotum and the penile shaft. A right scrotal cavernous hemangioma was incidentally found at the age of 6 years by a histological examination of a right scrotal hematoma attributed to contusion. The patient noticed a soft tumor of the penile shaft at the age of 10 and gradual enlargement of the tumor during the next 3 years. He consulted our department at the age of 13. An ultrasonic echogram revealed a heterogeneous tumor, a hemangioma, having dimensions of 3.5 X 2.5 X 1.5 cm and no connection of the corpus cavernosum penis. The tumor was completely removed surgically by means of circumcision on March 30, 1984, and histological examination demonstrated a cavernous hemangioma.

Adolescent↗
PubMed1986

Urinary tract stone disease in modern Japan. Stone incidence, composition and possible causes in Osaka district.

2,969 stones, obtained from affiliated hospitals as well as the Osaka University Urologic Clinic were analyzed by infrared spectrophotometry. 2,724 of the 2,969 stones were obvious upper urinary tract stones, and the composition of these 2,724 stones is reported. The incidence and possible cause of stones in 750 patients with upper urinary tract calculi, managed in Osaka University Urologic Clinic, are discussed, as well as the recent figures on urinary tract stone disease in Osaka district. These figures are representative of stone disease in Japan.

Adult↗
PubMed1986

State of systemic hemodynamics in a case of juxtaglomerular cell tumor.

A renin-producing juxtaglomerular cell tumor was found in a 27 year-old woman. The infusion of angiotensin II analogue produced a marked decrease in arterial pressure. Oral administration of captopril also reduced her blood pressure. Although the renal vein renin did not indicate the laterality of the tumor, unilateral partial nephrectomy cured the disease. This is the first case report to describe measurement of several hemodynamic parameters before and after surgical removal of a juxtaglomerular cell tumor.

Adult↗
PubMed1986

[A case of renal cell carcinoma with contralateral adrenal metastasis].

A case of a 55-year-old man with renal cell carcinoma metastasized to the contralateral adrenal gland is reported. He was admitted to our hospital with the complaints of hematuria and weight-loss. CT and arteriography revealed left renal tumor and contralateral adrenal mass. We made the diagnosis of left renal cell carcinoma with right adrenal metastasis, and performed left total nephrectomy and right adrenalectomy. Histologically, the adrenal mass was clear cell carcinoma, and it was diagnosed as metastasis from the left renal cancer. We reviewed 9 cases of renal cell carcinoma metastasized to the contralateral adrenal gland in the Japanese literature and discussed the effectiveness of pre-operative CT evaluation.

Adrenal Gland Neoplasms↗
PubMed1986

[Recent progress and problems in bladder-sparing operations in bladder tumors].

Retrospective analysis of the bladder tumor patients was performed to reveal the clinical results of partial cystectomy or transurethral resection (TUR). The observed 3-, 5-, 10-year survival rates after 143 partial cystectomies indicated for the first tumors were 66.2%, 57.1% and 41.5% respectively. To obtain satisfactory results, however, the operation should be indicated for pT2 or G0-G1. Some of the G2 tumors could also be the candidates for this procedure, but the stage of the disease must be below T2. At present, all these tumors could be well controlled by TUR, and this statement was confirmed by the study of clinical results obtained by TUR. The analysis also revealed a poor outcome in 6% of the low grade or low stage tumors and it increased to 25% in high grade and pT2. The complete cure of the high stage or high grade tumor is still difficult, but to improve the survival rate, radical surgery should be employed more positively instead of partial cystectomy. The reasons for this conclusion are also discussed.

Female↗
PubMed1985

Cytotoxic activity of peripheral blood lymphocytes grown with interleukin 2 against autologous cultured tumor cells in patients with renal cell carcinoma: preliminary report.

To examine the use of interleukin 2 as a therapeutic agent for human renal cell carcinoma the peripheral blood lymphocytes derived from patients with renal cell carcinoma were grown in interleukin 2 and tested in a 4-hour 51chromium release cytotoxicity assay against autologous cultured tumor cells. Peripheral blood lymphocytes, which were cultured separately in medium alone, mitomycin C-treated tumor cells, 20 per cent interleukin 2 and tumor cells plus interleukin 2, were used as effector cells. In all patients neither peripheral blood lymphocytes in medium alone nor in mitomycin C-treated tumor cells could lyse their own tumor cells. However, in 5 of 7 patients peripheral blood lymphocytes grown in interleukin 2 regardless of the presence of mitomycin C-treated tumor cells were capable of causing 5.7, 9.4, 12.7, 36.1 and 52.5 per cent lysis at effector/target cell ratios of 25, 50, 50, 50 and 25, respectively. However, more significant cytotoxicity was not obtained by peripheral blood lymphocytes cultured with tumor cells and interleukin 2. These results suggest that interleukin 2 might become a useful agent for patients with renal cell carcinoma.

Adult↗
PubMed1985

Xanthine calculi in the patient with the Lesch-Nyhan syndrome associated with urinary tract infection.

A Japanese boy with Lesch-Nyhan syndrome who passed xanthine calculi is reported. After pyelolithotomy for a left renal stone, made up of ammonium urate, associated with urinary tract infection, a high dose of allopurinol was given because of the persistence of pyuria. In the present case, the administration of a high dose of allopurinol, given for the prevention of ammonium urate stone formation in infected urine, induced xanthine calculi formation and we had difficulty in the management of this patient with Lesch-Nyhan syndrome associated with urinary tract infection. However, we believe it a basic necessity to cure our patient of his urinary tract infection and prevent recurrent ammonium urate stone formation because of the risk of renal deterioration.

Allopurinol↗
PubMed1985

Masculinizing operation for a female patient with congenital adrenocortical hyperplasia due to 21-hydroxylase deficiency.

A 25-year-old female with simple virilizing type of congenital adrenocortical hyperplasia due to 21-hydroxylase deficiency was treated surgically with masculinizing operations which consisted of two-stage procedures. The first procedure was chordectomy associated with excision of both gonads and female internal genitalia. Eleven months later, the second procedure consisting of urethroplasty and implantation of testicular prosthesis was performed. The postoperative course was successful in terms of urination and penile erection.

Adrenal Hyperplasia, Congenital↗