Fig. 2.
Histologic evaluation of the cervical mass revealed a phyllodes-like growth pattern with characteristic subepithelial neoplastic stromal condensation (cambium layer) (A) and small islands of heterologous benign fetal cartilage (B). Immunohistochemical staining for muscle marker desmin (C) and skeletal muscle marker myogenin (D) confirmed the diagnosis of rhabdomyosarcoma.