| Clinical and Pathological Features According to Tumor Size
in Patients with Clinical T1a Renal Cell Carcinoma |
| 4 cm 이하의 임상 T1a병기 신세포암에서 크기에 따른 임상 및 병리적 소견 |
|
김형종; 김병훈 |
|
|
|
|
| Abstract |
|
Purpose : A small renal cell carcinoma (RCC) detected incidentally without symptom is increased
due to the generalization of the ultrasonographic and computed tomography. We evaluated the
relationship of pathologic T stage; nuclear grade; histology and presence or absence metastasis
according to size of less than 4cm sized RCC. Materials and Methods : We analyzed the medical
records and pathology reports of 97 patients with less than 4 cm RCC in preoperative imaging
studies who underwent radical nephrectomy or partial nephrectomy from January 1996 to
December 2008. The size of the patients were divided into 2 groups; according to size of tumor
less than 3.1 cm groups and 3.1-4 cm groups. The pathological T stage; histology; nuclear grade;
and metastasis of each groups were investigated. Pathologic T stage were classified according to
American Joint Committe on Cancer 2002; and the nuclear grade were assessde by the Fuhrman
classification. Results : Less than 3.1 cm groups (A) and 3.1-4 cm (B) groups divided according
to the size of RCC were 68 cases (70%) and 29 cases (30%); respectively. When pathologic T
stage for each groups were divided into pT1 and pT3; pT1 were 65 cases (95.6%); 21 cases
(72.4%); and pT3 were 3 cases (4.4%); 8 cases (27.6%); respectively (Table 2) (p<0.05). When
nuclear grade of each groups were divided into the low grade (grade I; II) and the high grade (III; IV); the low grade were 62 cases (81.2%); 19 cases (65.5%); and the high grade were 6 cases
(8.8%); 10 cases (34.5%); respectively (Table 2) (p<0.05). When histology of each groups were
divided into conventional and non-conventional type; conventional type were 51 cases (75%); 25
cases (86.2%); and non-conventional type were 17 cases (25%); 4 cases (13.8%); respectively
(Table 3) (p>0.05). All groups had no metastases at diagnosis. Conclusions : Though size of
RCC was less than 4 cm in size; the rates of pT3 stage and high nuclear grade (grade III; IV) was
higher in larger tumor size. Thus the size of renal tumor is small; postoperative follow-up was
practiced more accurately because difference of malignancy grade was detected by renal tumor
size. |
| Key Words:
Computed tomography, Renal cell carcinoma,
Renal tumor |
PDF Links
Full text via DOI
Download Citation
