Irrfan Khan earlier revealed that he was suffering a rare disease and he has today taken to Twitter to announce that the disease that ailed him was Neuroendocrine tumour. Irrfan Khan is known for his exceptional work in Piku, Lunchbox and even in international movies like Life of Pi and Spiderman. The method actor was promoting his upcoming movie Blackmail when the news first broke and was initially diagnosed with jaundice.