Biomedical subjects
Publications and source records attributed to E Tremps Velázquez.
Presentation of two cases of Leydig cell tumor in adult patients who presented with gynecomastia, and slightly abnormal hormonal profiles. One patient had a non palpable tumor. The pathophysiology of this entity is commented, as well as the importance of the different modalities in its diagnosis.
OBJECTIVES: To report on an uncommon case of polypoid cystitis. METHODS/RESULTS: The patient had consulted because urinary stream was suddenly interrupted due to a mass protruding into the urethral meatus. The US, IVP, cystoscopic and pathological findings are documented. The literature on polypoid cystitis is briefly reviewed with special reference to its forms of presentation and the pathological findings which permit making the differential diagnosis from other pathologies, the most important being transitional cell papillary carcinoma. CONCLUSIONS: An uncommon case of cystitis is described, which emphasizes the varied forms of presentation of this condition and the need to distinguish this lesion from other pathologies, particularly bladder carcinoma.
OBJECTIVES: The urological complications in orthopedic surgery, the mechanisms of injury and its treatment are discussed. METHODS/RESULTS: Herein we describe a case of ureterohydronephrosis arising from extrinsic ureteral compression by cement utilized in total hip arthroplasty in a patient with a solitary kidney. CONCLUSIONS: The risk of acetabular perforation and subsequent migration of the cement into the pelvic cavity must be taken into account in patients undergoing hip replacement surgery. Conservative endourological management should first be attempted in the event of ureteral involvement, although resolution is by surgical repair in most cases.
OBJECTIVES: This study briefly reviews the histological types, clinical features, diagnostic and therapeutic aspects of urethral hemangioma, an uncommon benign vascular tumor. METHODS/RESULTS: A case of urethral hemangioma in a male patient with a long history of hematuria is described. CONCLUSIONS: Urethroscystoscopy is the most useful diagnostic technique in urethral hemangioma. Treatment is by transurethral resection, radical surgery, radiotherapy or selective arterial embolization depending on tumor location, number, size and patient condition. This tumor type frequently recurs.
Acute appendicitis, particularly pelvic, may cause a suppurative process that spontaneously drains to the bladder and an appendicovesical fistula may result. The pelvic appendix and the bladder may occasionally become fused in an inflammatory and necrotic focus, directly creating a fistula. A case of vesicointestinal fistula secondary to appendiceal pelvic peritonitis is described and the cases reported in the literature are reviewed.
Congenital or acquired pathology of the lower urinary tract currently does not preclude renal transplantation in patients with end-stage nephropathy. We report two cases of renal transplantation with ureteroileal cutaneous diversion in patients with a nonfunctional lower urinary tract due to bladder fibrosis secondary to urinary tuberculosis. We discuss the possibilities of the urodynamic study in the preoperative evaluation of patients with similar conditions.
A case of sarcomatoid carcinoma of the bladder is described. Its interest basically stems from the fact that this extremely aggressive tumor is uncommon in the bladder and there is existing controversy as to its anatomopathological distinction from other carcinosarcomas, spindle cell sarcoma and pseudosarcomatous bladder lesions.
We report a case of Wunderlich's syndrome secondary to spontaneous rupture of a renal artery aneurysm. Wunderlich's syndrome, also called spontaneous perirenal hematoma, may arise from several causes, the most common being renal tumors, particularly angiomyolipoma and hypernephroma. Spontaneous perirenal hematoma secondary to a ruptured renal artery aneurysm is rare and very few cases have been reported in the literature. We discuss the usefulness of the different noninvasive imaging techniques (US, CT and arteriography), our therapeutic approach and those advocated by others.
Report on one case of lithiasis in a transplanted kidney treated successfully with extracorporeal shockwave lithotrity. This is considered to be the choice therapeutical method when there are no bone interposition or urinary tract obstruction which may preclude the correct removal of lithiasis fragments.
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OBJECTIVE: Ureteral stenosis secondary to vasculitis is a rare disease. The etiology and treatment of this unusual cause of ureteral obstruction are discussed. METHODS/RESULTS: We report a case of ureteral obstruction secondary to Churg-Strauss vasculitis in a 45-year-old man. The patient was treated with prednisone and cyclophosphamide. Subsequently ureteral resection and reanastomosis were performed. CONCLUSIONS: Vasculitis of the ureter should be considered in patients with connective tissue disorders who present with ureteral dilatation. In some cases ureteral stenosis may require surgery in combination with steroid and/or immunosuppressive therapy.