JOHANNESBURG (AFP) - Nelson Mandela was comfortable and breathing without difficulty after being treated for pneumonia, the presidency said Saturday as the anti-apartheid icon spent a third day in hospital. Messages of concern for the ailing 94-year-old, one of the towering figures of modern history, have poured in since his admission late Wednesday for what was confirmed as “a recurrence of pneumonia”. Mandela had a build-up of fluid which had developed from the lung infection, known as a pleural effusion or “water on the lungs”, drained from his chest. “This has resulted in him now being able to breathe without difficulty,” said Zuma’s office said in a statement.