A 72-year-old man presented with bilateral flank pain, malaise and loss of appetite. Clinical investigation Serum creatinine - 632 Erythrocyte sedimentation rate - 120 Abdominal USS showed empty bladder with hydronephrosis What is the probable diagnosis?

Click here for the answer   *This patient case is from Docplexus Editorial Team for educative purpose only. Source: Camurology