Summary
Neurofibromatosis type 6 (NF6), also referred as café-au-lait spots syndrome, is a cutaneous disorder characterized by the presence of several café-au-lait (CAL) macules without any other manifestations of neurofibromatosis or any other systemic disorder. Prevalence is unknown, but the disease appears extremely rare. The macules may appear in infancy, but usually they are detected after age 2 years. CAL lesions are hyperpigmented with smooth or irregular borders. Their size may vary from a few millimeters to more than 10 cm. The etiology of NF6 remains unknown. Some forms of the disease have been found in close linkage to the NF1 gene (17q11.2) Transmission is autosomal dominant. The diagnosis is based on the presence of 6 or more CAL macules. Differential diagnoses include the neurofibromatosis type 1, McCune-Albright syndrome, and tuberous sclerosis (see these terms). Isolated CAL lesions do not require medical care. CAL spots are benign and may resolve with age. * Author: Prof. P. Wolkenstein (April 2009)*.
