Biomedical subjects

R M Mattos

Publications and source records attributed to R M Mattos.

3 recordsLinked to original sources

PubMed1997

Conservative surgery for ureteral tumor associated with horseshoe kidney.

PURPOSE: We demonstrate the successful conservative management of a ureteral tumor in a horseshoe kidney. MATERIALS AND METHODS: A patient with low grade transitional cell carcinoma of the left lower ureter had asymptomatic horseshoe kidney. Biopsy specimen revealed low grade tumor in the lower urinary tract that was associated with a congenital abnormality. The patient underwent total ureterectomy with bladder cuff excision and ileal ureteral interposition. RESULTS: With this technique renal function was preserved without resection through the isthmus of the kidney. The patient has no evidence of recurrent disease after 20-month followup by cytology, computerized tomography, excretory urogram and cystoscopy. CONCLUSIONS: Organ preserving surgery is an alternative to total nephroureterectomy in lower ureteral tumors in select patients.

Carcinoma, Transitional Cell↗

PubMed1997

Ileal ureter.

Ureteral replacement with ileal bowel segments has become common in the armamentarium of the reconstructive urologist. The use of ileal bowel substitution, whether total or segmental, has provided yet another surgical alternative for renal preservation. The indications, surgical technique, and results with the ileal ureter are reviewed.

Humans↗

PubMed1996

Survival of patients with renal cell carcinoma invading the inferior vena cava.

Renal cell carcinoma with extension of tumor thrombus into the vena cava occurs in 5% to 10% of patients diagnosed. It is important to determine the extent of the thrombus to plan the operative approach. As long as there is no evidence of metastatic disease to viscera or bones or involvement of the lymph nodes, radical nephrectomy with removal of the tumor thrombus remains the best treatment for patients and provides the best opportunity for long-term survival. In properly selected patients, extended operation offers good long-term survival as observed in patients treated at the Lahey-Hitchcock Clinic, where a demonstrated 5-year survival of 64% and a 10-year survival of 57% was achieved.

Carcinoma, Renal Cell↗