Results of histologic examination of the nodule revealed a lesion with an indistinct margin extending from the deep dermis to the fatty tissue. The nodule comprised spindle-shaped fibroblastlike cells intermingled with gangliocytelike giant cells with abundant eosinophilic cytoplasm and large nuclei with prominent nucleoli. The interstitium was primarily composed of a mucinous matrix with few collagen fibers. Typical mitoses were observed. Within 4 weeks, a spontaneous regression of all nodules was observed without any treatment; within 3 months, all the nodules completely disappeared.