hi. noted ct-scan results. first, your father has an enlarged prostate (mild prostatomegaly). this usually happens as male population age and if the patient has a history of benign prostatiic hyperplasia. second, your father has kidney stones (left renal calculi) and third, simple cortical cyst in both of his kidneys (bilateral renal simple cortical cysts). the most important thing to note about these two are the sizes and if they are causing obstructive symptoms in urination of your father. the last and probably the most concerning finding is the solid mass in the right lobe of his liver. what are the characteristics of the lesion and how big is it? is your father experiencing any symptoms such as weight loss, pain, jaundice, fever? it is best if you bring him to a doctor, a general surgeon and a urologist, for complete physical examination and clinical evaluation. other diagnostics (such as liver function tests, bilirubins, tumor markers, blood exams, etc.) and management (medical and/or surgical if indications are found) will be directed accordingly. hope this helps. good day!! ~dr.kaye