RHONJ's Amber Marchese ... My Breast Cancer Has Returned

"Real Housewives of New Jersey" star Amber Marchese is battling cancer for the second time.

Amber's husband tell TMZ, the reality star had surgery earlier this week to remove a lump she found a few weeks ago. Tests revealed the lump was cancerous.

This isn't Amber's first breast cancer battle ... she was diagnosed 6 years ago and had a double mastectomy.

We're told she's understandably scared but a fighter at heart and she believes with positive energy, she will beat it like the time before.