[Correlation of serum calcium level with tumor size and stage of renal cell carcinoma].
OBJECTIVE
To analyze the correlation between serum calcium level and tumor size/ stage in patients with renal cell carcinoma (RCC).


METHODS
Totally 173 RCC cases were divided into 3 groups according to their serum calcium level, namely low, normal and high level groups. SPSS10.0 software was used for statistical analysis of the tumor sizes/stages and their association with serum calcium level in the 3 groups.


CONCLUSIONS
Kruskal-Wallis H test revealed no significant difference in the tumor size between the 3 groups (X(2)=4.768, df=2, P=0.092), but Spearman correlation analysis suggested inverse correlation between serum calcium and tumor size (r=-0.166, P=0.029). Kruskal-Wallis H test also failed to suggest significant difference in the tumor stage between the 3 groups (X(2)=4.277, df=2, P=0.118), but serum calcium was found to be inversely correlated with the tumor stage (r=-0.157, P=0.039 by Spearman correlation analysis).
Bai
Han
H
Department of Urinary Surgery, Southern Medical University, Guangzhou 510515, China.
Zheng
Shao-bin
SB
Wu
Jing
J
Liu
De-zhong
DZ
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002118:Calcium / Q000097:blood*; D002292:Carcinoma, Renal Cell / Q000097:blood* / Q000473:pathology*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000097:blood* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging
D002118:Calcium