### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
my dad is 58 years old. he has severe dry cough, fatigue, slight fever at times. hes slightly diabetic and has blood pressure too.hes lost around 12kgs over the last 4 months. he used to smoke around 5-6 cigarettes till last month. hes stopped drinking alcohol 3 months back. performed ultrasound and endoscopy and detected fatty liver and mild gastritis. his blood test was totally normal 2 months ago. but his latest blood test shows ESR value of 70. some other variations are also present. doctor has ordered for a CT Scan as well. what could be the reason?

### output:

Thank you for posting query at Chat Doctor. Noted that your father has a history of Diabetes, hypertension, fatty liver disease and respiratory tract infection. He was a smoker but quit last month. He was alcoholic but quit 3 months ago. Though he quit smoking and alcohol recently, but the damage may have been done. ESR is elevated. Elevated ESR represents chronic inflammatory disorder in the body. Liver cirrhosis/ chronic alcoholism and smoking are risk factors for malignancy (cancer) in liver and lung respectively. Therefore, a CT is ordered to rule out any benign or malignant lesion in the liver and/or lung. Fiscal would have been an option too to rule out liver cirrhosis. Sudden weight loss also points towards malignancy though confirmation maybe done by the scan reports. Wish him good health. If any further questions, feel free to ask. Health professionals aim to diagnose properly and manage patients according to their limited knowledge. Cure is blessed by the ONE who Created us, whose power and knowledge is unlimited .wish you good health. Regards, Chat Doctor. 