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 ORIGINAL ARTICLE
Year : 2010  |  Volume : 47  |  Issue : 3  |  Page : 287-291

Renal tumors presentation: Changing trends over two decades


Department of Urology, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
N P Gupta
Department of Urology, All India Institute of Medical Sciences, New Delhi
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-509X.64728

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Purpose: We have analyzed the changing trends in surgical treatment of renal tumors over the last 2 decades with regard to age incidence, presentation, incidental detection, and histopathology. Materials and Methods: Records of renal tumors were analyzed from January 1, 1988 to December 31, 2007. Data were split into 4 parts based on a 5-year time period, 1 for each cohort of patients: cohort 1 (1988-1992)-103 patients, cohort 2 (1993-1997)-161 patients, cohort 3 (1998-2002)-243 patients, and cohort 4 (2003-2007)-304 patients. A comparative study was performed with regard to age incidence, presentation, incidentallomas, histopathology, and management with statistical analysis. Results: Out of 811 renal tumors, 17.63% cases were benign and 82.37% were malignant. In the first cohort, 34.95% cases were detected in the seventh decade as compared with cohort 4 in which these were detected in the sixth (34.86%) and fifth decades (21.38%). Incidentallomas increased from 11 (10.67%) in cohort 1 to 84 (27.63%) in cohort 4 (P = 0.001). The cases of surgically treated tumors increased in number from 103 to 304 in cohort 4. Among the presenting features, incidence of weight loss, flank pain, and lump decreased while other clinical syndromes were constant. Only open radical nephrectomy was performed in the first 2 consecutive timeperiods. Laparoscopic radical nephrectomy was increasingly used in cohort 4 as compared with cohort 3 (121 vs 32, respectively). Similarly, open nephron sparing surgery (NSS) was increasingly used in cohort 4 as compared with cohort 3. Among the histopathologies, clear cell carcinoma was most common (73.35 %), but Fuhrman grading showed a trend toward more cases detected with grade 1 and 2 in cohort 4; 23.73% and 61.86%, respectively, as compared with 15.85% and 45.12% in cohort 1 (P = 0.001); more T1 tumors were detected (63.42% in cohort 4 as compared with 41.46% in cohort 1). Conclusions: A majority of renal tumors presented as symptomatic tumors. Recently, tumors are being detected at an early stage and grade; in the younger patients, with an increasing trend of laparoscopic and open NSS.






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