White fibrous papulosis of the neck: the first South American case.

A 69-year-old woman presented with white papules on her neck. These papules were multiple, white, discrete, asymptomatic, non-follicular, 2 to 3 mm in diameter, and located on both sides of the neck. On histopathological examination, there was a thickened and abnormal organization of collagen bundles in the papillary to mid-dermis and a decrease in the number of elastic fibers. This clinical and histological picture suggested the diagnosis of white fibrous papulosis of the neck. No treatment was given because of the benign nature of the disease. This is the first case report of this condition in South America.