OUR STAFF REPORTER LAHORE Head of Sharif Medical City Hospitals Heart Surgery Department, Prof Mazhar-ur-Rehman conducted a successful operation of a complex and rare heart disease Hypertrophic Obstructive Cardiomyopathy (HOCM) of a 31-year-old patient Asif Ali, a second operation of its nature in Pakistan. Project director Sharif Medical City Hospital Prof Dr Naseeb Awan told that Prof Mazhar also performed the same surgery of a patient in the Sharif Medical City Hospital in early 2006. On this occasion, Prof Mazhar told that in this disease, a muscle inside the heart becomes thick and large causing obstruction to the flow of blood to human body. He said that this disease was the main cause of sudden death in youngsters. He said that his team done this operation free of cost. He said that the extra muscle was removed to release the obstruction and the patient was recovering fast now. He said that this was the second case of HOCM conducted here and Sharif Medical City Hospital had become a HOCM heart surgery centre now. The younger brother of the patient Muhammad Amjad told that he contacted the doctors in Lahore and Karachi for the surgery of his brother but most of the doctors refused to perform the surgery due to risk factor.