Adrenocortical carcinoma of size 6cm without invading surrounding structure is classified as :
Mc Farlane classification of Adrenocortical tumour :

Stage I : < sem.
Stage II : > sem.
Stage III : Locally invasive tumour.
Stage IV : Destant metastasis.
Stage I Adrenocortical carcinoma
Stage II Adrenocortical carcinoma
Stage III Adrenocortical carcinoma
Stage IV Adrenocortical carcinoma