What causes upper torso swelling?

Upper torso swelling can be caused by various factors, including fluid retention, inflammation, or underlying medical conditions. Common causes include heart failure, kidney disease, or liver issues, which can lead to fluid accumulation. Inflammation from injuries, infections, or conditions like rheumatoid Arthritis can also contribute to swelling. Additionally, allergic reactions or circulatory problems may result in localized swelling in the upper torso.