A 30-year-old man presents to medicine OPD with complaints of low-grade fever and cough for 2 months. He also states that he has lost 5 kg weight over the last 2 months. Physical examination reveals multiple conglomerated cervical lymph nodes. A chest x-ray reveals a lesion in the apical right lung. Lymph node aspiration shows necrotizing granulomatous lymphadenitis. a. What is your probable diagnosis? b.Discuss the etiopathogenesis of the condition. c.Briefly describe the natural history and spectrum of the condition.