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Biomedical subjects

Stephen J Savage

Publications and source records attributed to Stephen J Savage.

7 recordsLinked to original sources
PubMed2005

Fluorescence in situ hybridization for detecting transitional cell carcinoma: implications for clinical practice.

OBJECTIVE: To determine the diagnostic sensitivity of genetic studies using fluorescence in situ hybridization (FISH) for detecting both new and recurrent cases of transitional cell carcinoma (TCC) in a routine clinical practice setting, as bladder cancer has a significant risk of recurrence and progression to invasive disease and thus sensitive surveillance testing is very important. PATIENTS AND METHODS: FISH was performed using the UroVysion kit (Vysis Inc., Downers Grove, IL, USA) Consecutive patients were assessed using FISH, both to evaluate those with a history of TCC or with suspicious symptoms, and the FISH results were compared with concurrent biopsy and cytological assessments. RESULTS: In all, 521 consecutive FISH tests from 300 patients were evaluated; 47% had a history of bladder cancer and 53% had suspicious symptoms. Of the 521 FISH tests, 24% were positive; concurrent cytology was available for 84% of the FISH tests, with a concordance rate of 78% (6% were positive for both and 72% were negative by both tests). For the discordant cases, FISH was positive and cytology negative in 21% of cases, and cytology was positive with a negative FISH for 1%. In all, 99 FISH tests had concurrent biopsy data. Of the 44 cases histologically positive for TCC, 32 were FISH-positive, resulting in an overall sensitivity (95% confidence interval) of 73 (60-88)%. FISH detected 95% of cases with high-grade carcinoma, while only seven of these 17 were positive by concurrent cytological assessment. FISH detected 56% and cytology detected 32% of low-grade lesions. FISH detected all nine new cases with positive histology. Overall, the specificity of FISH was 65 (53-78)%. Of 112 patients with previous TCC, 28 had a recurrence; 22 of these had positive FISH results. CONCLUSION: FISH analysis has a high sensitivity for detecting new cases of TCC, as well as recurrences. From the present data FISH is considerably more sensitive and only slightly less specific than cytology in diagnosing TCC. Therefore, we recommend FISH as a useful initial diagnostic tool in patients suspected of both new and recurrent TCC.

Adult↗
PubMed2004

Metastatic cancer to the renal pelvis: a novel approach to management.

We describe a novel application of percutaneous renal surgery for the management of an unusual and challenging urologic problem. Two patients with symptomatic, metastatic adenocarcinoma in the renal pelvis were treated with percutaneous resection. The lesion was in a solitary kidney in 1 patient, and was bilateral in the second. Percutaneous resection resulted in complete relief of symptoms and obstruction. Although both patients ultimately died of their primary disease, their quality of life was significantly improved in the interim. Percutaneous resection of renal pelvic tumors is accepted management for select patients with upper tract transitional cell carcinoma. These 2 cases demonstrated both an unusual presentation for metastatic adenocarcinoma and an expanded application for percutaneous renal surgery.

Adenocarcinoma↗
PubMed2003

The nested variant of urothelial carcinoma: clinicopathology of 2 cases.

The nested variant of urothelial carcinoma is a recently described bladder tumor entity with a rare incidence. Two cases of this disease are presented in this report; the patients in both cases were elderly men, with a predominant involvement of the trigone region. Histologically, the tumor cells were arranged in ill-defined nests and had low-grade nuclear features. Both cases had a diffusely infiltrating growth pattern with widespread local disease at cystectomy. Strong immunohistochemical staining for p63 in the neoplastic cells supports the urothelial cell nature of this neoplasm. High p53 and Ki-67 indices of this tumor correlate with the aggressiveness of this subtype.

Aged↗
PubMed2002

Occult renal cell carcinoma in a patient with polymyositis.

Polymyositis (PM) is associated with an increased risk of malignancy. We report a case in which a 45-year-old patient with PM underwent computed tomography to search for an occult malignant process. The evaluation revealed a left renal mass that was treated successfully by laparoscopic radical nephrectomy. Pathologic evaluation revealed a clear cell renal cell carcinoma. The patient remained free of disease at 2 years postoperatively and required decreasing amounts of medication to manage his PM. This suggests that renal malignancies may contribute to the PM disease process in a paraneoplastic fashion and that screening for occult malignancy in the presence of PM is warranted.

Carcinoma, Renal Cell↗
PubMed2002

Laparoscopic radical cystectomy and continent orthotopic ileal neobladder performed completely intracorporeally: the initial experience.

PURPOSE: We introduce the operative technique of laparoscopic radical cystectomy and orthotopic ileal neobladder with a Studer limb performed completely intracorporeally. MATERIALS AND METHODS: The procedure was performed in 1 man and 1 woman. Using a 6 port transperitoneal approach, radical cystectomy in the female patient and radical cystoprostatectomy in the male patient were completed laparoscopically with the urethral sphincter preserved. Bilateral pelvic lymphadenectomy was done. A 65 cm. segment of ileum 15 cm. from the ileocecal junction was isolated, and ileo-ileal continuity was restored using Endo-GIA staplers (U.S. Surgical, Norwalk, Connecticut). The distal 45 cm. of the isolated ileal segment were detubularized, maintaining the proximal 10 cm. segment intact as an isoperistaltic Studer limb. A globular shaped ileal neobladder was constructed and anastomosed to the urethra. Bilateral stented ureteroileal anastomoses were individually performed to the Studer limb. All suturing was done exclusively using free-hand laparoscopic techniques and the entire procedure was completed intracorporeally. An additional case is described of Indiana pouch continent diversion in which the pouch was constructed extracorporeally. RESULTS: Total operative time for laparoscopic radical cystectomy and orthotopic neobladder was 8.5 and 10.5 hours, respectively, with a blood loss ranging from 200 to 400 cc. Hospital stay was 5 to 12 days and surgical margins of the bladder specimen were negative in each case. Both patients with orthotopic neobladder had complete daytime continence. Postoperative renal function was normal and excretory urography revealed unobstructed upper tracts. During followup ranging from 5 to 19 months 1 patient died of metastatic disease, while the other 2 are doing well without local or systematic progression. CONCLUSIONS: Laproscopic radical cystectomy and orthotopic ileal neobladder performed completely intracorporeally are feasible.

Adult↗