United Kingdom, March 7 -- Teddi Mellencamp's doctors have found more tumours in her brain and lung.

The 43-year-old reality star recently underwent surgery to have tumours removed from her brain but she's now explained a scan showed there are more masses which cannot be removed as well as two more in one of her lungs - and she's vowed to beat cancer as she prepares to start immunotherapy treatment.

In a post on Instagram, she wrote: "Update from my scans today. I have multiple tumours in my brain that weren't able to be removed via surgery.

"I have 3 more tumors in my brain and 2 tumors on my lungs.

"These are all metastases of my melanoma. The doctors are hopeful that immunotherapy will effectively treat them."

She went on to add: ...