For example, a 1 year old healthy female twin in whom a lesion appeared 6 mos ago and has been stable in size.
On exam, left upper back 1.3cm x 1cm skin colored subcutaneous mobile firm nodule, overlying skin wnl, No Darier's sign.
Can I monitor clinically and biopsy if growth or is a biopsy indicated to rule out Infantile myofibromatosis?