His tumor was detected in October, but it was said to be non-malignant. Now, however, it has reportedly been diagnosed as malignant.
Yuvraj, who is suffering from tumor between the lung and heart, has now been diagnosed with Grade 1 Cancer.
Singh was Player of the Tournament in the World Cup last year with 362 runs, 15 wickets and four Man-of-the-Match awards, has also been taking Ayurvedic medicines to battle the disease.
The cancer is curable and reports say his chemotherapy started in February and may go on until March.
We wish Yuvraj a speedy and successful recovery.