### Patient: Doctor, I have noticed a lump on my arm that has been growing and causing pain. I am really concerned about it.
### Doctor: Based on your symptoms, it is possible that you have soft tissue sarcoma. To diagnose this, we would need to perform a complete physical skin exam as well as a biopsy. Depending on the results, further tests such as MRI or other diagnostic procedures may be required. Treatment may involve excision (removal) of the affected tissue and wound care management post-surgery. We may also need to perform an excision of the skin lesion.