NERVE - Malignant neurilemoma

Shown here is a portion of a circumscribed tumour, apparently encapsulated, and composed of pale tissue arranged in some areas in a whirled pattern and in others simply as solid tumour.
The original lesion measured 14.0 x 10.0 x 4.0 cm and showed only a few mitotic figures. Three months later the lesion recurred and was much less well differentiated; death occurred from widespread metastases a few months later. The patient was 21 years old.