Vestergaard et al have reported dermoscopy assessment is more accurate than clinical evaluation by naked eye for the diagnosis of cutaneous melanoma (odds ratio = 15.6, P = .016). In this study, the mean sensitivity in the diagnosis of melanoma was 74% for the examination by naked eye and 90% for dermoscopy.
a genetic disorder is a disease that is caused by a change or mutation in an individual s dna sequence single gene disorders disorders caused by defects in one particular gene often with simple and predictable inheritance patterns dominant diseases single gene disorders that occur when an individual has one altered copy of the relevant gene and one healthy copy for example huntington s disease
Huntington disease is caused by a genetic defect on chromosome 4. The defect causes a part of DNA to occur many more times than it is supposed to. This defect is called a CAG repeat. Normally, this section of DNA is repeated 10 to 28 times.