Malignant mesothelioma with minimal asbestos exposure.

The association of malignant mesothelioma and asbestos fibers is well established. The minimal exposure that may produce the tumor is not known. The present report documents the minimal exposure by thorough examination of occupational history and personal hobbies, and counting of the number of asbestos fibers in the lungs. The evidence for the elemental composition of asbestos fibers by electron probe (EDAX) is also presented.