Non-neurogenic Tumoral and Pseudotumoral Lesions Affecting Peripheral Nerve

This chapter reviews a variety of non-neurogenic tumoral and pseudotumoral lesions affecting nerve. These may include benign entities such as ganglion cysts, adipose lesions of nerve, and neuromuscular choristomas or malignant ones such as metastases with perineural spread. Knowledge of their clinicoradiological features can generate a differential diagnosis, in some cases establishing a diagnosis without the need for biopsy. These findings have treatment implications.