[Occupationally-induced progressive scleroderma and the heart].

A 60-year-old man with progressive systemic sclerosis (PSS) had worked as underground miner in ore mining for 26 years with intensive exposure to crystalline silica. The PSS was acknowledged as an occupational disease. Parallel to the progress of the PSS there developed disturbances of the conduction system and cardiac rhythm with left heart failure. Despite treatment sudden death set in. A myocardial fibrosis was found histopathologically. This is a consequence of the PSS and therefore the occupational disease is the cause of death. Cardiac involvement means a poor prognosis and necessitates both evaluation of the damage in percent caused by the occupational disease and interdisciplinary teamwork in the dispensary care of patients.