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Oncological characteristic of incidental renal tumors
Article published in Urologia Polska 2005/58/4.

authors

Jakub Dobruch 1, Andrzej Borówka 1, Tomasz Dzik 2, Roman Sosnowski 3, Przemysław Szostek 1
1 Klinika Urologii Centrum Medycznego Kształcenia Podyplomowego, I Zespół Dydaktyki Urologicznej ? Oddział Urologii Międzyleskiego Szpitala Specjalistycznego w Warszawie
Kierownik kliniki i ordynator oddziału: prof. dr hab. Andrzej Borówka
2 Zakład Anatomii Patologicznej, Międzyleski Szpital Specjalistyczny w Warszawie
Kierownik zakładu: dr med. Tomasz Dzik
3 Klinika Nowotworów Układu Moczowego, Centrum Onkologii ? Instytut w Warszawie
Kierownik kliniki: doc. dr hab. Tomasz Demkow

keywords

kidney, renal tumor, histopathological examination, diagnosis

summary

introduction and the aim of the study
Incidence of renal cancer especially renal cancer confound to the kidney gradually rose in recent years. It is most probably associated with wide spread of ultrasound scans. The aim of the present study was to compare oncological characteristics of incidental renal tumors with renal tumors diagnosed because of symptoms and signs suggestive of renal mass.
material and method
Charts of all patients operated on renal tumor from January 2002 and May 2004 were reviewed. Patients were divided into two groups. In Group I renal tumors were diagnosed incidentally whereas in Group II renal tumors were diagnosed because of symptoms and signs suggestive of renal mass. In both Groups the following parameters were analyzed: age, sex, site of the tumor, way of treatment, pathological stage and histological type of tumor.
results
116 patients, 46 (40%) women and 70 (60%) men were operated on renal tumor. In 87 of them (75%), (35 (40.2%) women and 52 (59.8%) men) renal tumors were diagnosed incidentally. In 29 of them (25%), (11 (37.9%) women and 18 (62.1%) men) tumors were diagnosed because of symptoms and signs associated with them. Average age was 61 years (from 25 to 85) and 57 years (from 20 to 84) in Group I and II respectively. Tumors invading right kidney were more frequently diagnosed in both Groups (54% Group I vs 62% Group II). Average maximal diameter of excised tumor was significantly greater in Group II then in Group I (7.90 cm vs 4.27 cm, p<0.001). Nephron sparing surgery was carried out in 22 patients (25.3%) of Group I and in none of Group II. Histopathological evaluation revealed that clear cell carcinoma predominated in both Groups - it was found in 68 (78%) patients from Group I and in 24 (83%) from Group II. 12 (15%) tumors in Group I and 12 tumors (41%) in Group II were classified as Grade 3 and 1 (1%) in Group I as G4.
conclusions
Oncological characteristic of incidental renal tumors is more favorable then tumors diagnosed due to symptoms and signs. Incidental renal cancers are also smaller and therefore more suitable for nephron sparing surgery.

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correspondence

Jakub Dobruch
Oddział Urologii Międzyleskiego Szpitala Specjalistycznego
ul. Bursztynowa 2
04-749 Warszawa
kubadobr@amwaw.edu.pl
tel. 0 503 072 230