Does the site of the mass its hypervascularity and its high T2 signal intensity suggest a histological type?
Yes, clear cell type RCC usually affects the upper pole, is hypervascular and shows high T2 signal.
Can you mention two diseases that may be associated with such a tumour?
Tuberous sclerosis and von Hippel Lindau disease.
Images revealed an upper pole right renal mass lesion showing low T1 signal, high T2 signal, and heterogeneous contrast enhancement with non-enhancing areas that likely represent necrosis.