Brown asbestos, also called Amosite, is often described as one of the most hazardous forms of asbestos. Working with it for long enough without protection can certainly result in cancer, although probably not sarcosis.

No one should ever work in dusty environments that include airborne asbestos of any type, unless substantial personal protection is used, including respirators, disposable clothing, tools dedicated to the contaminated work area, showers with filtered drains, etc., etc.

First, anything can be mistaken for anything - doctors are human beings. It just depends on your doctor. If you go to a Doctor's Care or some other Doc-in-a-box place with something rare or strange - unlike syphilis or BV (which is what everybody is usually there for), then yes, you can be misdiagnosed. It happens rather frequently.

Sarcosis is a condition where there is a fleshy overgrowth of tissues somewhere. The neoplasms - or tumors - can be either malignant or benign. If they're malignant, you'll know it. If they're benign, they don't cause much trouble besides pushing up against things.

Blepharitis is a condition where the oil glands in the eyelids malfunction, resulting in an irritable, itchy, inflamed, sore, red eyelid. Look up Stye if you dont know what I'm talking about.

Sarcosis of the eyelid is VERY rare. If you have the irritability and symptoms of Blepharitis, it probably is Blepharitis, but get a second opinion from an opthamologist or eye specialist if you're skeptic. If it's not itchy or red, but there's something growing on the eyelid, looks like a tumor, its most likely squamous papilloma.