Sarcoidosis and amyloidosis. Is the association causal or co-incidental?

During 1950-83, 52,371 autopsies were done at the Los Angeles County Hospital; 503 cases showing amyloidosis, seven of these also had sarcoidosis, and three also had rheumatoid arthritis. These associations could be coincidental or it is just possible that there is a causal aetiological relationship. It is hoped that other workers will review their material, and, in particular, to assess whether there is an increased incidence of amyloidosis in sarcoidosis.