Abstract Neurofibromatosis type 1 (NF1) is a neurocutaneous disorder caused by a mutation
on chromosome 17 of the gene for neurofibromin. Patients with this condition are prone to
develop benign and malignant tumors of the central and peripheral nervous systems.
Genitourinary involvement in children with NF1 is uncommon and primarily affects the
bladder. External genital manifestations of NF1 are rare with sporadic reports of children
presenting with enlargement of their penis, clitoris, or labia due to a neurofibroma. We …