The news that superstar Irrfan Khan is battling neuroendocrine tumor has shaken his fans world wide. What causes the disease? Who are at risk? What are the symptoms and risk factors? How is it diagnosed and treated? Get all the latest in this expert article by renowned neurosurgeon Dr. N K Venkataramana in an article published in the New Indian Express."What is the Neuroendocrine Tumour?" "Indian Express - Thursday, 5 July 2018" Dr. Venkataramana explains in detail about Neuroendocrine tumor, the disease ailing superstar Irrfan Khan.