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

### input:
I am a 76 year old woman who began to lose weight for no reason . I lost my appetite but have gotten it back now to some degree but not my weight.I have a lot of test and they only showed that I was lacking in magnesium so I am taking this now , so far I am still low in it I have lumps under my skin on my legs and arms which I was told by one Dr. it is nothing to worry about , Having researched this I have found out it could indeed be cancer. I will be seeing an oncologist in a couple weeks , I have had cancer before and radation but it did not advance any more.I look in the face very thin and my eyes look very weak , I do not feel well at all ,Could this weight loss and lumps mean there is a cancer in my body? thank you

### output:

Hi. Thanks for your query. Noted the history and understood your concerns.Losing weight for no obvious reason that the low magnesium but with history of cancer that got treated by Radiotherapy, although you have not mentioned the details of it can be due to recurrence of cancer. But there is no cancer that can have so many lumps in the legs and arms; these could have been lipomas that got visible due to loss of weight. The only sure-shot way is to get this ultrasound, FNAC and/or biopsy to confirm the cause of these lumps. Most important looks to be re-evaluation of the past cancer whether there is any recurrence and to get a confirmed diagnosis. Stress, anxiety and such mental conditions can cause the problems. Since you have mentioned that other tests are normal, we can take that you do not have diabetes, thyroid or liver related problems the cause of weight loss. Take care, anyway a visit to an Oncologist will help further to clarify.