Beryllium Disease is caused by inhalation of beryllium dust, in a factory environment.  The symptoms of Beryllium disease are shortness of breath, development of small lung scars, a special kind of scar called a granuloma, which is noticeable only in lung biopsy material.  

Beryllium can cause caner but is only a carcinogen at levels that are much higher than a normal person would be exposed to working with beryllium in a factory environment. 

More Information on Beryllium Disease can be found at the following sites:

http://www.nationaljewish.org/beryllium/ber.htm

http://www.llnl.gov/Be-prevention/

http://ehpnet1.niehs.nih.gov/docs/1998/106p765-767middleton/abstract.html

http://tis.eh.doe.gov/be/index.html-ssi

http://es.epa.gov/ncerqa_abstracts/centers/njmrc/proj3.html

http://www.indra.com/rfcab/Newsletter/beryllium.html

http://www.house.gov/kanjorski/berlmain.htm