[Carcinoma of the Bellini's collecting duct: report of 2 new cases]. / Carcinoma del conducto colector de Bellini: aportación de dos nuevos casos.

Report on two new cases of Bellini's collector duct carcinoma (CTC), discussing the clinical, radiological and pathological aspects which differentiate this disorder from the clear cells carcinoma, and review of the related literature.

[Paratesticular rhabdomyosarcoma: report of a case]. / Rabdomiosarcoma paratesticular: aportación de un caso.

A case of paratesticular rhabdomyosarcoma in a 17-year-old patient is described. The clinical features, diagnostic and therapeutic aspects of this rare tumor type are briefly discussed.

[Inguino-scrotal bladder hernia]. / Hernia vesical inguinoescrotal.

We report on a 61-year-old patient with massive scrotal herniation of the bladder and non-Hodgkin malignant lymphoma. We briefly describe this disease entity and its form of presentation, and discuss its diagnosis and treatment.

[Carcinosarcoma with chondromatous differentiation of the bladder]. / Carcinosarcoma con diferenciación condromatoide de vejiga.

We report a case of carcinosarcoma whose most striking feature was its markedly chondroid elements that initially prompted us to suspect a chondrosarcoma. The clinical features and treatment of this rare tumor type are briefly discussed.

[Hypernephroma and bladder leiomyosarcoma. Report of a case]. / Hipernefroma y leiomiosarcoma vesical. A propósito de un caso.

We report on a patient with two primary and synchronous urological tumors (hypernephroma and leiomyosarcoma of the bladder). Patient follow-up of 14 months revealed no evidence of tumor recurrence. The clinical, diagnostic and therapeutic aspects of this rare tumor of the bladder are highlighted. We consider surgical treatment mandatory and radio- and chemotherapy adjunctive treatment modalities.

[Cystic renal adenocarcinoma]. / Adenocarcinoma renal quístico.

Renal adenocarcinoma presenting as a cystic mass is uncommon and causes difficulty in making the differential diagnosis. Ultrasound and particularly CT are considered to be the most useful diagnostic methods. The usefulness of ultrasound or CT-guided punction-aspiration has yet to be established since the aspirate is often non-specific. The major difficulty encountered when making the differential diagnosis is that of distinguishing cystic renal adenocarcinoma from multilocular cystic nephroma. Multilocular renal carcinoma and multilocular cystic nephroma are the most common adult multilocular renal cystic masses. The latter is more common in the female, whereas cystic renal adenocarcinoma is more common in the male patient.

[Inverted papilloma of the bladder. Apropos of 2 cases]. / Papiloma invertido de vejiga. A propósito de dos casos.

Two cases of transitional cell inverted papilloma are described. The first case was a 44-year-old male patient who presented with hematuria. The second case was an incidental finding during a retropubic adenomectomy procedure. We describe the clinical features of this condition and discuss its histogenesis and treatment. Because of the possibility, although very small, of its evolving to malignancy, these patients must be followed carefully.

[Lymphoma and the urogenital system: apropos of a case]. / Linfoma y aparato genitourinario: a propósito de un caso.

Lymphomas constitute a group of malignant lymphoreticular diseases that may affect the adrenal glands and the GU system as a primary condition or, more frequently, as distant invasion. We report on a case of diffuse, histiocytic non-Hodgkin lymphoma that had been in hematologic clinical remission but had recurred with invasion of the right renal parenchyma. Initially, it could not be determined whether it was a primary neoplasm or the result of primary lymphatic spread. The reports published in the literature relative to this condition are reviewed.

[Female urethral diverticulum with lithiasis]. / Litiasis en divertículo uretral femenino. A propósito de un caso.

A case of diverticulum of the female urethra complicated by lithiasis is described. The etiopathogenic aspects, clinical features, diagnostic methods and treatment of this rare condition are discussed.

[Diffuse malignant mesothelioma of the testicular tunica vaginalis. Report of a new case]. / Mesotelioma maligno difuso de la túnica vaginal testicular. Presentación de un nuevo caso.

We present a case of diffuse malignant mesothelioma of the tunica vaginalis testis, a very uncommon tumor site, in a patient who also had a tumor localized to the chest. We could not determine however, whether the testicular neoplasm was a primary tumor or a distant metastasis. We describe this tumor type, its mode of presentation, diagnosis and treatment.

[Urethral diverticulum in the male]. / Divertículos de uretra en el varón.

We report on a 50-year-old male patient with acquired urethral diverticulum complicated by calculus in the anterior urethra. The etiologic factors, the hypotheses put forward relative to the pathogenesis of urethral diverticulum, its diagnosis and forms of treatment are discussed.

[Giant calculus in a diverticulum of the anterior urethra]. / Gran litiasis en un diverticulo de uretra anterior.

A case of lithiasis in a front diverticulum of the urethra in male is presented. The unusual presentation it had together with the lack of frequency was pointed out, commenting briefly the diagnostic methods and ways of treatment.

[Adrenal gland hydatidosis]. / Hidatidosis suprarrenal.

A case of hydatid cyst of the adrenal gland in a patient with a previous history of hydatidosis is described. Following a brief discussion of the pathological features of adrenal cysts, attention is focussed on the diagnosis and treatment of this specific form of adrenal cyst: the hydatid adrenal cyst.

[Malignant retroperitoneal fibrous histiocytoma of the inflammatory type. Apropos of a case]. / Histiocitoma fibroso maligno retroperitoneal tipo inflamatorio. A propósito de un caso.

A case of inflammatory malignant fibrous histiocytoma is described herein. We discuss its clinical features, therapeutic possibilities and diagnosis, highlighting the usefulness of magnetic resonance imaging as well as the importance of correct anatomopathological diagnosis.

[Cephalad blind-ending bifid ureter. Presentation of 3 new cases]. / Uréter bífido ciego craneal. Presentación de tres nuevos casos.

Three additional cases of cephalad blind-ending ureters are reported herein. These cases had been diagnosed during IVP evaluation for other disorders. Its mode of presentation and diagnosis are briefly discussed and the literature reviewed.

[Transitional cell carcinoma in a retrocaval ureter]. / Carcinoma transicional en uréter retrocavo.

We report a case of duplicated inferior vena cava and right retrocaval ureter with a urothelial tumor. The embryonal, clinical and diagnostic aspects of this disease entity are discussed. CT permitted noninvasive visualization of the retrocaval ureter and the urothelial tumor. We underscore the usefulness of the foregoing imaging technique versus the more invasive techniques such as cavography and ascending pyelography.

[Neurogenic bladder secondary to herpes zoster. Urodynamic evaluation]. / Vejiga neurógena secundaria a herpes zóster. Valoración urodinámica.

A case of urinary retention from infranuclear neurogenic bladder secondary to perineal herpes zoster infection is described. We discuss the different urological compromise (neurologic and vesico-prostatic) following herpes zoster infection and the importance of correct diagnosis and patient follow-up. We do not recommend instituting drug therapy. Intermittent use of a catheter is advocated as the only treatment modality for this condition, which is reversible in most of the cases.

[Epidermoid carcinoma in the renal pelvis]. / Carcinoma epidermoide de pelvis renal.

A case of epidermoid carcinoma of the renal pelvis is described. The etiologic, prognostic and therapeutic aspects of this uncommon tumor of the upper urothelium are discussed.

[Torsion of the spermatic cord]. / Torsión del cordón espermático.

We report on 55 cases of torsion of spermatic cord. We describe the clinical features and the findings on physical examination as well as other factors such as patient age, past history of transient painful episodes which should prompt us to consider this condition. In our view, immediate surgical exploration is justified in all cases of acute scrotum in patients in the second-third decade of life in whom this condition is suspected. This approach has allowed us to achieve testicular salvage in 76% of the cases immediately postoperatively. Contralateral fixation is mandatory. The possibility that unilateral testicular torsion might cause subsequent infertility from lesion to the contralateral testis probably due to an autoimmune mechanism has led to a reconsideration of radically conservative management of testicular torsion. Testes whose viability is doubtful should be removed. If untwisting and fixation is performed, patients should be followed closely for a long period to evaluate patient fertility.