Table 2.

Immunohistochemical Staining Results^* for Metastatic Clear Cell Renal Cell Carcinoma versus Adrenal Cortical Lesion with Adrenocortical Markers

	Calretinin (C, N)	Inhibin (C)	MelanA (C)	SF-1 (N)	Synaptophysin (C)
CC-RCC (overall)	18/184 (10%)	17/184 (9%)	18/184 (10%)	0/184 (0%)	3/184 (2%)
CC-RCC (WD)	13/133 (10%)	11/133 (8%)	11/133 (8%)	0/133 (0%)	2/133 (2%)
CC-RCC (PD)	5/51 (10%)	6/51 (12%)	7/51 (14%)	0/51 (0%)	1/51 (2%)
ACL	56/63 (89%)	54/63 (86%)	54/63 (86%)	54/63 (86%)	37/63 (59%)

^* ≥2+ staining intensity considered positive

CC-RCC = metastatic clear cell renal cell carcinoma, WD = well-differentiated, PD = poorly-differentiated, ACL = adrenal cortical lesion, C = cytoplasmic, N = nuclear