<s>[INST] Dear Doctor I am 34 yr old male, 2 months ago undergone a surgery for Soft tissue sarcoma in my left thigh.Reports are attached.Now I am observing a swelling in my chest( Its xray and U/S report is also attached). Is this swelling related to My Soft tissue sarcoma?what should i Do? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Possibility of recurrence of sarcoma is more in your case. Sarcoma can recur after surgery. And Chest wall is common site for recurrence. Chest x-ray and ultrasound are not confirmatory for sarcoma. You need to get done biopsy from this chest wall swelling for diagnosis of sarcoma. So better to get done biopsy first. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>