1. Why is the lack of clinical manifestations in the ROS above significant?

2. Based on this rather limited information provided under History, ROS, SKIN, and HEENT above, which subtype of melanoma is most likely?

3. Are any of the laboratory blood test results above abnormal and, if so, what is suggested by the abnormality?

4. What is the current probability that this patient will be alive in 10 years?