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There very little info on the statistics for the coexistence of celiac
disease and other autoimmune disease.  They certainly can co-exist,
however good studies are lacking. The association with lymphoma is better
described.  However the risk in non compliant biopsy proven celiacs is
still quite low 5% lifetime risk.  it is lower still in compliant
patients. Are there individuals who have a higher risk of getting it,
other than the compliance issue, age may be another factor.  The older a
patient is the greater the risk. As more atypical patients are diagnosed
with CD the % who get lymphoma will likely fall.
not medical advice
Joe Murray