"Real Housewives of New Jersey" castmember Amber Marchese underwent surgery on Monday morning after discovering a pea-sized lump in her breast.

Marchese is a breast cancer survivor, and had a biopsy of the mass to determine if it is malignant.

The reality star updated fans on her health via Twitter early Monday morning, saying she discovered a "small pea sized, somewhat bean shaped, lump" in her left breast on Good Friday.

Although Marchese said that the odds of the lump being cancerous are low, she spent the subsequent weeks worrying about potentially undergoing cancer treatment for the second time.

"I was swept right back into the agony one faces when they could possibly face death," she wrote. "As I usually do in times of stress, I shut most of the world out, focus in on my family, and pray to God, a lot."

During Sunday Mass, however, she says she felt a peace. The wife and mother said that when she let go of fear and put her faith in God, she suddenly felt comforted.

"It is all going to be fine, regardless what the outcome," she realised. "I am physically strong and through my spiritual faith, I am mentally strong. I have turned to God and put my trust into Him instead of shunning Him away. I embrace my faith instead of saying, 'Why me.'"

Her message for her fans was that if they have faith, they will have peace. She said that her suffering and the suffering that everyone faces is meant to grow our faith, and draw us closer to God.

"God willing, I can put this all behind me and simply be mum again, however in the meantime I will continue to strengthen my faith and show my love to all," Marchese wrote. "I am armed with today's Sacraments, I was anointment [sic] by my Priest, and have my 'Catholic bag' ready to go (LOL). I am ready!!! I am ready for it all!!!!"