Adrenal Mass in a 70-Year-Old Woman

Table 3

Classification system for staging ACC [9, 20].

ENSAT stage	TNM stage	TNM definition
I	T1, N0, M0	T1, tumor ≤5 cm
		N0, no positive lymph node
		M0, no distant metastases
II	T2, N0, M0	T2, tumor >5 cm
		N0, no positive lymph node
		M0, no distant metastases
III	T1-T2, N1, M0	N1, positive lymph node(s)
	T3-T4, N0-N1, M0	M0, no distant metastases
		T3, tumor infiltration into surrounding tissue
		T4, tumor invasion into adjacent organs or venous tumor thrombus in vena cava or renal vein
IV	T1-T4, N0-N1, M1	M1, presence of distant metastases

ENSAT, European Network for the Study of Adrenal Tumors; TNM, tumor, node, metastasis.