My mother has an appt. on Fri. for dermatologist.  I'm curious in the
meantime.  She's over 60 years old, caucasion but dark complexion
(syrian) and showed me a "lesion" last night located below her jaw in
the rear by the joint.  I took a flash light to it and the color is
GREEN.  I could not tell by my naked eye if there was a "border",
etc.. All I can say is that it's like an oval shape and GREEN!!  I
almost thought it was a piece of gum stuck to her facial hair and
expected her to wash it off in the shower.  But, that didn't happen. 
I'm really concerned.  Everything regarding skin cancer does not match
this description,  WHAT COULD IT BE?

Hi,
The researchers here are not doctors and cannot diagnose any
condition.

However, a search of the Internet for:
facial lesion discoloration green 

does provides some results that might be related to the strange color
you noted.

***Pseudomonas aeruginosa

http://www.sonic.net/~snevel/etherbun/msg67175.html
Ok, don't laugh...T his site discussed a problem with a rabbit. The
fur has turned green. It turns out that a bacterium, Pseudomonas
aeruginosa, has been associated with turning rabbit fur green.

Pseudomonas has also been implicated in folliculitis and unmanageable
forms of acne vulgaris. Folliculitis is an infection of a hair
follicle. Since older women tend to pluck at hairs on their chin, an
infection in this area is not uncommon.
http://www.bact.wisc.edu/Bact330/lecturepseudomonas

A health alert from the Center for Disease Control a few years back
focused on the transmission of this pathogen...
Pseudomonas Dermatitis/Folliculitis Associated With Pools and Hot Tubs
--- Colorado and Maine, 1999--2000
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4948a2.htmhttp://www.cdc.gov/mmwr/preview/mmwrhtml/mm4948a2.htm

It is often present in the hospital setting and many infections are
transmitted to patients who are in the hospital for other treatment
(nosocomial infection), but it can be found in the refrigerator!
Another reason to wash your hands well after you handle raw foods.
http://www.sunysccc.edu/academic/mst/microbes/18paeru.htm
This site discusses identification and choosing drugs to treat the
problem.
http://www.interchange.ubc.ca/cmpt/cmpt_new/m73-1_nov97.htm

**Focal bilirubin deposition (cutaneous bile pigment deposition)

Another possibility may be bile deposits... The picture on page 1 is
explained on page 2.
http://archderm.ama-assn.org/issues/v136n1/fpdf/dof9029.pdf

Most precancerous lesions are not pigmented, so the culprit is
probably fungal or bacterial. Whatever the cause, a visit and
treatment by a good dermatologist seems to be the best idea.

Good luck,
bcguide-ga

Hello,
Without seeing the lesion, it is impossible to say what it could be. 
One possibility would be seborrheic keratosis.  It is typically
described as a "stuck on" appearance, as you have described.  The fact
that it is green may be due to pigment - which can make it look green.
 These lesions could be brown, gray, black, or skin-colored.  Here are
some pictures of this:

http://tray.dermatology.uiowa.edu/SebK001.htm
http://eduserv.hscer.washington.edu/dermUW/mela/small/mel13.jpg

Hope this helps,
Kevin, M.D.