The pop star is taking the Malawian youngster, along with her children Rocco and Lourdes, to see grandad Tony Ciccone at a hospital in Michigan.

He has been undergoing chemotherapy after having surgery for colon cancer. The Sun has been told the treatment is going well.

¡°Madonna is keen to introduce David to his grandad ¡ª although the circumstances are less than ideal," revealed a family friend. "He has been diagnosed with colon cancer and is undergoing chemotherapy.

¡°But at the moment the prognosis from the doctors is as good as can be expected.

¡°It is just a shame that the family are going through this secret sadness when it should be a joyful time with the new baby."