MSFinals-2050
A 35-year-old man presents with progressive weakness in his right upper limb and both lower limbs over the past four months. He has also developed digital infarcts affecting the second and third fingers on the right hand and the fifth finger on the left. On examination, his blood pressure is 160/140 mm Hg, all peripheral pulses are palpable, and there is an asymmetrical neuropathy. Laboratory investigations reveal a haemoglobin level of 120 g/L (130-170), a white cell count of 12.5 ×109/L (4-10), a platelet count of 430 ×109/L (150-450), and an ESR of 50 mm/hr (0-15). Urine examination shows proteinuria and 10-15 red blood cells per high power field without casts. What is the most likely diagnosis?