An 18 year old boy presents with digital gangrene of the third and fouh fingers over the last 2 weeks. On examination the blood pressure is 170/110 mm of Hg and all peripheral pulses were palpable. Blood and urine examinations were unremarkable. ANA, Anti-dsDNA and ANCA were negative. Which of the following represents the most likely diagnosis?
Wegener's granulomatosis Polyaeritis nodosa Takayasu's aeritis Systemic lupus erythematosis (SLE)