Given that less than 10 percent of those with sarcoidosis will have neurological involvement, and possibly later on in their disease course, neurosarcoidosis has a prevalence of less than four per 100,000.Sarcoidosis most commonly affects young adults of both sexes, although studies have reported more cases in females. Incidence is highest for individuals younger than 40 and peaks in the age-group from 20 to 29 years; a second peak is observed for women over 50.Sarcoidosis occurs throughout the world in all races with an average incidence of 16.5/100,000 in men and 19/100,000 in women. The disease is most prevalent in Northern European countries and the highest annual incidence of 60/100,000 is found in Sweden and Iceland. In the United States sarcoidosis is more common in people of African descent than Caucasians, with annual incidence reported as 35.5 and 10.9/100,000, respectively. Sarcoidosis is less commonly reported in South America, Spain, India, Canada, and the Philippines. There may be a higher susceptibility to sarcoidosis in those with coeliac disease. An association between the two disorders has been suggested.The differing incidence across the world may be at least partially attributable to the lack of screening programs in certain regions of the world and the overshadowing presence of other granulomatous diseases, such as tuberculosis, that may interfere with the diagnosis of sarcoidosis where they are prevalent. There may also be differences in the severity of the disease between people of different ethnicities.
Syringocystadenoma papilliferum is a benign apocrine tumor.It can arise with nevus sebaceus. Additional images
See also
List of cutaneous conditions
Hidradenoma papilliferum
Papillary eccrine adenoma
List of cutaneous conditions associated with increased risk of nonmelanoma skin cancer

References


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