My AAD Conference
![image of people at a medical conference](https://dermatologyseattle.com/wp-content/uploads/2018/03/DUed9_iW0AUdhPs-768x512.jpg)
Now, the prognosis of melanoma is judged by its thickness. More than 4 millimeters, about half the width of your fingernail, means a 90% death rate in a few years.
Now, the prognosis of melanoma is judged by its thickness. More than 4 millimeters, about half the width of your fingernail, means a 90% death rate in a few years.