A 66-year-old male presents with a history of loin pain
and passage of blood in his urine. He says he has been feeling unwell for some
time with weight loss, fever and night sweats.
On examination apart from an elevated blood pressure you
cannot find any clinical signs.
Investigations reveal an elevated ESR and hypercalcaemia.
In this patient what is the most likely diagnosis:
Renal cell carcinoma