What would cause a lump larger than golf to form between two ribs on my lower back? i had just had a benign polyp removed from my colonoscopy. i also have muscular dystrophy and have lost over 20 lbs in the past couple months. i have not gained or lost we

Any : Any weight loss over 10 pounds in 6 months, unless attained through diligent intentional efforts, is considered abnormal. 20 pounds in 2 months is a lot of weight loss. With your family history, you are at increased risk of cancer in any organ system. You should see your primary care physician to determine which studies will have the highest likelihood of getting to the source of the weight loss. Many causes are not cancer, such as an overactive thyroid. As for the nodule on your back--it may or may not be a source of symptoms. Many people have benign fatty lesions. However, the size can be concerning. I saw a "lipoma" recently that took up most of the guy's shoulder. Larger lesions, even if a "lipoma" can hide cancer inside them and should be removed. Also, any lesion that is increasing in size, stuck to the underlying tissue, or has a "hard" feeling to it needs to be removed.

Lump & weight loss: In addition to the great advice already received, please continue to see your doctor. Any lump needs to be examined by a doc. The most benign possibility is a sebaceous cyst, which are relatively common and can be removed, but there are other causes. The weight loss needs to be mentioned as well. Peace and good health.