I have a thyroid cyst, 10 enlarged lymph nodes in neck & 8 in groin, lung scarring, high k, low na, lower wbc, hypotension & a long list of symptoms?

Internist. You're not going to get a diagnosis in an on-line forum. You obviously have a complicated problem that will require a comprehensive evaluation. If your local doctor can't help, seek help at an academic center with a general internist. You're only 113 miles from des moines. Ps, hi k and low na with low BP suggests addison's disease.