Malignant Triton Tumors in Sisters with Clinical Neurofibromatosis Type 1

Figure 5

(a) Malignant triton tumor (MTT) cells. Spindle, fasciculated, and pleomorphic malignant schwannoma cells are appreciable with numerous mitotic figures in the field. (b) Eosinophilic rhabdomyoblasts within malignant schwannoma cells. (c) Positive immunohistochemical stain with NF-200 highlighting neurofilamentous component of tumor. (d) Positive immunohistochemical stain with desmin. (e) Positive immunohistochemical stain with MyoD transcription factor demonstrating myogenic component of tumor.

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