Q@Qq8? - cardio69

[ArchivalUser]

A 69 y/o M shows fine nodularity (chest x-ray) upper lung fields. Pat work from 25-55 yrs as a miner. Since then he been assisted his brother in contracting work and now averages several hours per day installing insulation houses in Philadelphia. The biopsy of lesion on the lung reveals http://i.imgur.com/xzCYa4G.jpg?1
Repeated exposure to which of the following cause this lesion?

a)Chrysotile fibers
b)Tremolite
c)Crocidolite
d)Quartz
e)Coal dust


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