Figure 4. Diffuse strong positivity for S-100 protein

From

Malignant Peripheral Nerve Sheath Tumor of Buccal Mucosa: An Oncological Surprise

Ram Abhinav Kannan, Kirthi Koushik, Usha Muniyappa, Ritika Harjani, Arvind Murthy

American Journal of Medical Case Reports. 2014, 2(10), 222-224 doi:10.12691/ajmcr-2-10-6