Glomus tumours are benign painful tumours of the glomus body, a thermoregulatory shunt in the digits. Glomus tumours of the fingers and toes are associated with the monogenic disorder neurofibromatosis type 1 (NF1) and are recently recognised as part of the NF1 phenotype.
Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, 49 Convent Drive, Building 49, Room 4A62, Bethesda, MD 20892, USA. drstewart@mail.nih.gov