Conversation: The conversation between human and AI assistant.
[|Human|] my mom has been diagnosed with acid reflux/heart burn. she just had a bloodtest lately and the result is high in CEA2 which is 4.2H level. what could be the reason why she  is having shortness of breathing and easily fatigue, coldness/tingling of feet?
[|AI|]  Hi welcome to Chat Doctor...CEA is a carcinoembryonic antigen that can be elevated in many conditions both benign and malignant like .......1. Infection 2.IBD 3. Pancreatitis 4. Some benign tumor 5. Smokers 6. Intestine malignancy 7. Lung malignancy etc..... As dyspnea also present respiratory causes has to be searched for like infection or lung malignancy. Chest x-ray done for it, if needed then more specific investigation done like CT scan . Here we should not neglect this increased tumor market and I would like you to suggest you to consult physician for examination and USG or CT like investigation... According to cause treatment done ... For infection antibiotic can be given ... Vitamin B 12 estimation also done ... You can post follow-up report for further guidance .... Take care .....