Marynell Maloney, age 42 yrs old, comes in for her routine liver sonogram. Her cholesterole level is slightly elevated with all other LFTs within normal range. The sono reveals two masses adjacent to each other, measuring 2.8cm and 1.5cm. respectively, in the right lobe of the liver. They look to be separated by bands of fibrous tissue and appear well defined and heyperechoic. There is no increased blood flow present. Most likely diagnosis?
focal nodular hyperplasia