[Initial experience with radiofrequency percutaneous ablation of renal tumors].

Objectives: To evaluate the usefulness of percutaneous or laparoscopic application of radiofrequency for ablation of tumoral tissue in patients with the diagnosis of solitary renal tumor.

Methods: 3 male patients (one with bilateral renal tumor) underwent 4 radiofrequency ablation treatments (1 laparoscopic, 3 percutaneous) for renal masses between 1.5 and 5 cm (average 3.

[Bifid ureter with a blind branch as cause of unspecified abdominal pain. Report of a new case and review of the literature].

Objective: To report a case of bifid left ureter with a blind-ending branch in a 35 year-old female patient who complained of poorly defined abdominal pain.

Methods: Clinical features, radiologic findings, differential diagnosis and therapeutic approach are discussed and the literature reviewed.

Results: Bifid ureter with a blind branch is not an uncommon anomaly as generally believed.

[Cacchi Ricci disease associated with congenital hemihypertrophy].

Objective: An uncommon case of medullary sponge kidney with congenital hemihypertrophy complicated by nephrocalcinosis and nephrolithiasis is reported here.

Methods/results: A 29 year old female patient with multiple episodes of renal colic is presented. Clinical features, radiological findings and differential diagnosis in a patient with Cacchi-Ricci disease are discussed.

[Neuroendocrine small cell carcinoma of the bladder. Review of the literature and report of a case].

Objective: A case of small cell neuroendocrine carcinoma of the urinary bladder is described. Treatment was by transurethral resection of the bladder tumor in two steps and adjuvant chemotherapy with cisplatin (CDDP) plus etoposide (VP-16) and radiotherapy. To date, 152 cases have been reported.

[Orthotopic bilateral ureterocele. Obstructive urination syndrome in a young adult caused by bladder neck occlusion. Differential diagnoses].

Objective: To report a case of bilateral orthotopic ureterocele in a 22-year-old male who presented a sudden cessation of urinary stream due to bladder neck obstruction caused by a large, intravesical ureterocele. The differential diagnosis of voiding syndrome and the current approach to ureteroceles are discussed.

Methods: The literature is reviewed with special reference to the clinical and radiological findings.