Relationship between café-au-lait spots as the only symptom and peripheral neurofibromatosis (NF1): A follow-up study

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Abstract
We re-examined 21 children with the possible diagnosis of peripheral neurofibromatosis (NF1) based on the presence of café-au-lait (CAL) spots as the single clinical finding. We evaluated whether "typical" or "atypical" appearance of the spots was important for the final diagnosis and whether the co-existence of other non-specific signs (e.g. pectus excavatum) were of any significance for the final diagnosis. In 8/14 (57.1%) cases with "typical" CAL spots, the diagnosis of NF1 was finally established on the basis of other criteria. For the other 6 patients the diagnosis is not yet definitive but highly probable on the basis of the presence of macrocephaly, pectus excavatum and/or MRI findings. Only one patient among five with "atypical" CAL spots possibly has NF1.