Pope Leo diagnosed with cancer Pope Leo XIV, 71, has been diagnosed with lung cancer after doctors removed a part of his right lung during an operation Lower lobe of right lung removed Right lung Middle lobe Superior lobe Superior lobe Inferior lobe Trachea Left lung LUNG ADENOCARCINOMA What is it?: Lung cancer starting in mucus-producing, glandular cells. About 40% of lung cancers Patients: Most common in adults aged 70 and older. Usually current or past smokers, but one in seven patients never smoked. Other causes include genetic mutations. Pope Leo not known to be smoker Treatment: For Stage 1, surgery alone may be enough. For later stages prognosis worsens. Treatment depends on tumour makeup: targeted pills for some, chemotherapy or immunotherapy for others Papal Suite: Pope Leo staying in secure, 200 sq m apartment on top floor of Rome’s Gemelli Hospital (below) Guarded by Italian State Police, Vatican Gendarmerie and hospital security, it includes small chapel and kitchen 2km 1.2 miles River Tiber Colosseum Vatican City Gemelli Hospital ROME Sources: Vatican, CDC, Reuters, BBC Pictures: Getty Images © GRAPHIC NEWS