10/31/2014 08:16 EDT | Updated 12/31/2014 05:59 EST

Rob Ford's tumour hasn't shrunk after chemotherapy

Two rounds of chemotherapy have failed to shrink the tumour in Toronto Mayor Rob Ford's abdomen, his family has confirmed with CBC News.

Last month the Toronto mayor was diagnosed with a rare but aggressive type of malignant tumour.

Ford's family confirmed that while his tumour has not shrunk, it has also not grown in size.

Ford is also battling pneumonia and is due to begin a third round of chemotherapy at Mount Sinai hospital on Monday.

The cancer diagnosis forced Ford to withdraw from the mayor's race last month. Instead, he won a council seat in the northwest Toronto ward currently held by his brother, who ran for mayor but finished second to John Tory.

Tory will be officially sworn in in December.

The are reports that Ford's doctor will provide an update about his treatment on Monday.