A backfire is when the ignition of fuel doesn't take place in the ignition/combustion chamber, it(a backfire) can take place in the intake or exhaust. It can â¦ be caused by a fuel to air ratio not being correct, also if the timing of the spark is not just right that could cause it to back fire.
Melanoma in the United States. From 2005 to 2009, the median age at diagnosis for melanoma of the skin was 61, and the median age at death was 68. The age-adjusted incidence rate was 21.0 per 100,000 men and women per year.
Just diagnosed - Malignant melanoma on scalp. I am 31 years old and relatively fit. I'm seeing a specialist this week to have a wider excision done. I guess I'm just wondering what to expect and of there is no real answer at this stage until the excision is done.