Neoplasms have rarely been reported in lesions of lupus erythematosus (LE) and have included basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and atypical fibroxanthoma.
Pericarditis can also be seen in autoimmune diseases, like rheumatoid arthritis, scleroderma, or systemic lupus erythematosus, because the immune system attacks its own tissues, including the pericardium.