Final answer:
The suspected diagnosis for a 10-year-old boy with fever, weight loss, and night sweats, along with an anterior mediastinal mass, is Lymphoma.
Step-by-step explanation:
The suspected diagnosis for a 10-year-old boy presenting with fever, weight loss, and night sweats, along with an anterior mediastinal mass, is Lymphoma. Lymphoma is a type of cancer that affects the lymph nodes and can cause symptoms such as fatigue, swollen lymph nodes, loss of appetite, and weight loss. In this case, the anterior mediastinal mass suggests the involvement of lymph nodes in the chest area.