Lahore: Former Pakistan prime minister Nawaz Sharif on Tuesday underwent a medical examination at the Punjab Institute of Cardiology (PIC) and was later revealed that his heart is “larger than normal.” Sharif, who is serving a seven-year jail sentence at Lahore’s Kot Lakhpat jail in connection with the Al-Azizia Steel Mills case, was brought to the hospital amid heavy security. Entry of people to the cardiology institute was blocked for some time, Geo News reported.