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Biomedical subjects

J Rivera Ferro

Publications and source records attributed to J Rivera Ferro.

13 recordsLinked to original sources
PubMed2002

[Endoscopic treatment of ureteral lithiasis. Our experience with 360 retrograde uretero-renal endoscopies in the last ten years].

Presentation of results and complications obtained in 360 procedures of transuretral ureterorenoscopy (URS) in ureteral lithiasis performed in our unit from january 1990 to august 2000 in 354 patients: 55% female and 45% male. A rigid ureteroscopy Storz 10.5 Ch. was used and intracorporeal lithotripsy was necessary in 17.31% of cases. URS indications were always treatment of ureteral lithiasis, pelvic ureter localization in most cases (70.33%) being 93.05% the percentage of overall success and with a significant decrease when the calculus was located in the upper third of the ureter. Serious complications were only 3.05% of cases and endoscopic surgery was necessary in three cases of ureteral stenosis. In our experience, URS is our technique of choice for treatment of lower and medium third of the ureter where the percentage of success we have obtained were 98.99% and 95.83% respectively.

Adult↗
PubMed2001

[Hypercalcemia, leukemoid reaction, and thrombocytosis as paraneoplastic presentation of transitional cell carcinoma of the kidney].

The most common etiologies of hypercalcemia are hyperparathyroidism or malignancy, most often of the lung, breast or hematological system, but rarely occur in transitional cell carcinoma. The appearance of this metabolic disorder and other paraneoplastic signs like leukemoid reaction or thrombocytosis is a potential marker for malignant behaviour and poor prognosis in advanced tumours. Simultaneous presentation of that three paraneoplastic signs have only been described in two patients with wellknown bladder carcinoma. Most paraneoplastic syndromes appear only during the late stages of malignancy when the diagnosis has long been established, but sometimes may be an early sign of the malignancy. We describe a case of a previously unknown infiltrating transitional cell carcinoma of the kidney without bony metastasis, that presented itself with hypercalcemia, hyperleukocytosis resembling a leukemoid reaction and thrombocytosis. We think recognizing the paraneoplastic syndrome is very important because it is an alarm sign of malignancy.

Aged↗
PubMed2001

[Prostatic leiomyosarcoma. Report of a case a review of the literature].

A 48-year-old male with a leiomyosarcoma of the prostate is presented. The clinical presenting features were those of rapidly evolving prostatism and rectal symptoms (rectal bleeding, sense of rectal fullness and perineal pain). Arising from the smooth muscle cells of the prostate gland, this is a rare neoplasm that account for less than 0.1% of prostate malignancies, with a poor prognosis. It is often difficult to determine a definite origin, being necessary the differential diagnosis with pseudosarcoma, inflammatory fibrosarcoma, prostate abscess and other rare tumors. There is no established protocol of treatment. Combined modality therapy including radical surgery, radiation therapy and chemotherapy seems to be the best, although prognosis remains poor.

Humans↗
PubMed2000

[Granulomatous orchitis].

Granulomatous orchitis is an inflammatory change of the testis. This is a rare lesion of unknown etiology. Usually are unilateral. The clinical appearance varies, and it is difficult to differentiate from testicular cancer. The diagnosis usually being made on histological examination after orchiectomy. Our paper report one case of granulomatous orchitis in a 27 year old patient. A review of the literature is made on the diagnosis and pathogenesis.

Adult↗
PubMed1999

[Giant renal angiomyolipoma].

OBJECTIVE: To present a cae of giant renal angiomyolipoma that required surgical treatment owing to its size and concomitant intratumoral hemorrhage. METHODS: The characteristics of the case are presented and discussed. RESULTS/CONCLUSIONS: Giant renal angiomyolipoma is one of the most frequent causes of Wünderlich syndrome and is diagnosed by ultrasound and CT. The decision to operate is based on the size of the lesion and/or symptomatology, as in the case described herein, which required a simple nephrectomy.

Angiomyolipoma↗
PubMed1999

[Intestinal obstruction secondary to peritoneal carcinomatosis after iatrogenic perforation during TUR for transitional cell carcinoma of the bladder].

OBJECTIVE: A case of intestinal obstruction following transurethral resection (TUR) of a locally advanced transitional cell carcinoma of the bladder is presented. METHODS/RESULTS: The unique features of the present case are described. Laparotomy was performed and peritoneal carcinomatosis was found. Renal function became impaired and the abdominal condition persisted. The patient died five days postoperatively. CONCLUSIONS: Intestinal obstruction following TUR of transitional cell carcinoma of the bladder is an uncommon complication that is mainly due to peritoneal seeding following iatrogenic perforation of the tumor or the bladder wall during resection. Still, TUR is undeniably useful in the diagnosis, staging and treatment of bladder neoplasm.

Carcinoma, Transitional Cell↗
PubMed1995

[Endoscopic pyelotomy with the "ACUCISE" probe].

OBJECTIVES: The aims of the present study were to assess the results achieved by the newly designed ACUCISE cutting probe in the treatment of the PUJ syndrome, to describe its advantages and disadvantages and to determine the possibility of its replacing other previously utilized techniques. METHODS: The ACUCISE cutting probe was utilized in 10 patients with pyeloureteral stricture. After the stent had been left indwelling for two months, it was removed and the patients had regular control evaluations two months thereafter. RESULTS: The results have been optimal to date, with complete resolution of the pyeloureteral stricture in 100% of the cases. No significant complications have been observed. Some of the control images are presented. CONCLUSIONS: In our view, the availability of the ACUCISE cutting probe represents a major contribution to minimally invasive surgery in the treatment of the PUJ syndrome. Its advantages far surpass its disadvantages, some of which can be overcome by the skill acquired from more experience. Its only major drawback is that it cannot be used in children under thirteen because of its caliber. When positioned correctly, the ACUCISE cutting probe achieves a clean, precise and an even cut of the same diameter and extent. It is a useful alternative to the other techniques utilized in the treatment of PUJ stricture.

Adolescent↗
PubMed1992

[Pyeloureteral stenosis: its treatment by endopyelotomy].

Percutaneous endopyelotomy is becoming widely accepted in the treatment of primary or secondary stenosis of the ureteropelvic junction because it achieves excellent results and is less invasive. Herein we describe our experience with this technique, which we perform with the electric knife and large caliber ureteral stents. Seventeen endopyelotomy procedures were performed in 16 patients with a minimum follow-up of one year. This technique successfully resolved the stenosis in 14 cases. We consider it to be the procedure of choice due to the excellent results and the low complication rate.

Adult↗
PubMed1991

[Our experience with the 1st 100 cases of transurethral incision of the prostate performed for benign prostatic hypertrophy].

Transurethral incision of the prostate (TUIP) or prostatotomy is a recently developed surgical technique whose favourable results have been reported elsewhere to range from 88% to 92%. It has a precise indication in small prostates and short urethras, and in well-selected cases its results are superior to that achieved by transurethral resection (TUR). Moreover, alterations of sexual function (impotence, retrograde ejaculation, etc.) are less and it affords the following advantages: the surgical technique is easy to perform, postoperative hospital stay is minimal, and patient comfort is enhanced. We have reviewed the first 100 prostatotomy procedures performed at the Urology Department of our hospital. Patient follow-up was 1 1/2 years. Good results were achieved in 65 (95.5%) of 68 patients with prostates less than 20 gms. In 20 patients with prostates between 20-30 gms., we achieved a success rate of 85% (3 poor results). The results were poor in 4 of 12 patients (60% success) with prostates more than 30 gms. The early complications were minimal and no late complications were observed. Thus, we believe this is a valid technique when performed in the appropriate cases.

Evaluation Studies as Topic↗
PubMed1990

[Urothelial carcinoma of the ureter excised using percutaneous nephrostomy].

We report on a case of ureteral carcinoma submitted to resection by percutaneous nephrostomy. After considering the different therapeutic alternatives, we believe that the approach described herein is very interesting in well-selected cases since it is a highly conservative surgical procedure that permits followup and reoperations relatively easily.

Carcinoma, Transitional Cell↗
PubMedDate not supplied

[Primary renal lymphoma].

OBJECTIVE: To describe a case of primary renal lymphoma. MATERIAL AND METHODS: We presents a patient with a right renal mass which histological analysis revealed a non-Hodgkin Lymphoma. RESULTS: A 78-year-old male patient with right flank pain mass was referred to our Service. He was diagnosed of renal mass by imaging studies. Inmunohistochemical investigations revealed a B-cell-type lymphoma. He received combination chemotherapy with CHOP. CONCLUSIONS: Primary renal lymphoma is a rare disease whose existence has been questioned, because the kidney does not normally contain lymphoid tissue. Its clinical presentation is like any other renal tumor and its definitive diagnosis is by histology. Elective treatment is chemotherapy (CHOP).

Aged↗