Imran Khan, who has been busy shooting for Vishal Bhardwaj’s next ‘Matru Ki Bijli Ka Mandola’, had to go under the knife at a city hospital close to his home a few days ago. Two cysts were surgically removed from Imran’s body by plastic surgeon Dr Anil Tibrewala: one from his head and the other from his arm. A close friend of the actor told, “Imran has been operated for a sebaceous gland problem.” Imran wasn’t discharged on the day the surgery was conducted. He had to stay in the hospital for more than a day and his wife Avantika was by his side all night. Said the friend, “Imran was in acute discomfort especially with the cyst in his head. It had become very difficult for him to sleep straight and even comb his hair. It had to be removed.” Ranbir Kapoor too had a cyst on his lower back and had to be operated in February this year. However Ranbir was discharged within a few hours while Imran had to be hospitalised for nearly 24 hours. A doctor on request of anonymity explained how a cyst can form due to a sebaceous gland. “Such cysts are not dangerous. But if not removed, they can grow and cause a lot of discomfort,” he said.