Yuvraj, 29, who was declared the man of the tournament after the World Cup win at home in April, had opted out of the upcoming one-day series against the West Indies for health reasons.

"During the World Cup, Yuvraj found himself constantly troubled by bouts of coughing and vomiting," his mother Shabnam Singh said in a statement.

"He ignored the problem, assuming it was due to stress and didn't want anything to distract him.

"When the problem persisted after the World Cup, we decided to seek medical advice... scans then showed us that Yuvraj was dealing with something really serious. A golf-ball size lump (was) found over his left lung," she said.

"Further reports have indicated that the tumour is non-malignant and non-threatening and can be treated through proper medication and therapy... Yuvraj is now in a much better state and on his way to a full recovery."