Lung, Adrenal, Liver cancer

My mom had gallbladder cancer in her early twenties...she was treated for gallstones and the cancer was discovered and removed at that time. Later on, at age 44, she died...she was diagnosed five days prior to her death with lung cancer, the tumor was 10x8x6 cm. After reading the autopsy it appears that te cancer was also in her adrenal gland, 15x9x7 cm, and her liver 6x4x2 cm...is this hereditary and should I be tested for it? I am 34 years old...