Hello, my 9 year old son was just diagnosed with a singular, pedunculated osteochondroma on the proximal humorous. It is 3.0cmx 1.1cm. It is painless, and we found it incidentally. He is an otherwise healthy, very tall and thin boy. We went for an evaluation to a pediatric orho surgeon, who suggested that we may want to consider its removal. We have read much of the literature about this condition and were surprised of this doctor s recommendation because the literature suggests that a conservative, wait and monitor approach is sufficient. We are aware of the possible risk of malignant transformation (stated to be at 1%), perhaps slightly higher because of this tumor s proximity to the midline of the body. Based on this information, I am inclined to have this removed, however, my husband feels the risks of removal (eg, infection, and the fact that this is unnecessary/elective) outweigh the benefit. By not removing this tumor, I would be concerned not only about the risk of transformation, but also about the cumulative risk of X-rays over the course of our son s life as we would be monitoring it s growth. We take this matter very seriously and must decide how best to proceed. Our son s welfare is our first priority. We would be so grateful for your opinion. Thank you! Sincerely, Casey Rochester, NY