What is the association between the “fixed nodule(s) at pressure point(s)” on the left wrist/right elbow and a diagnosis of rheumatoid arthritis? Identify three abnormal laboratory tests in Table 80.1...

What is the association between the “fixed nodule(s) at pressure point(s)” on the left wrist/right elbow and a diagnosis of rheumatoid arthritis?

Identify three abnormal laboratory tests in Table 80.1 that are consistent with a diagnosis of rheumatoid arthritis.