Metanephric adenoma are often asymptomatic. Possible symptoms of metanephric adenoma include: 
Hematuria Abdominal distension Abdominal pain
Polycythaemia is a characteristic finding seen in approximately 10% of patients with metanephric adenoma.
What are the historical and symptomatic characteristics of metanephric adenoma?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What are the historical and symptomatic characteristics of metanephric adenoma? [/INST] \n Metanephric adenoma are often asymptomatic. Possible symptoms of metanephric adenoma include: 
Hematuria Abdominal distension Abdominal pain
Polycythaemia is a characteristic finding seen in approximately 10% of patients with metanephric adenoma.</s>