A case of scapular Paget's disease of bone with concurrent autoimmune
thyroiditis and articular chondrocalcinosis is reported. Although infr
equent, this combination suggests the involvement of common pathogenic
mechanisms: thyroiditis and Paget's disease may stem from the same vi
ral infection and/or autoimmune disorder, whereas chondrocalcinosis ma
y be the consequence of thyroiditis-related hypothyroidism. In contras
t, the association of Paget's disease and chondrocalcinosis may be for
tuitous since both disorders are common.