Teddi Mellencamp bravely showcased her brain surgery scars as she continues to battle stage 4 cancer. The “Real Housewives of Beverly Hills” alum posted a picture of her shaved head via Instagram Thursday, revealing the surgery scars from her emergency brain surgery last year. Also in the carousel, she posted a snap of her signature long, blond hair — a stark contrast from the vulnerable photo. Teddi Mellencamp bravely showcased her brain surgery scars via Instagram Thursday. Teddi Mellencamp/ Instagram The “Real Housewives of Beverly Hills” alum also posted a snap of her signature long, blond hair — a stark contrast from the vulnerable photo. Teddi Mellencamp/ Instagram Mellencamp was first diagnosed with melanoma in 2022 , which later metastasized to her lungs and brain. The Bravolebrity revealed her cancer was “gone”  last October, but is not officially considered in remission by doctors.…