[Gelatinous cyst of the common peroneal nerve]

The authors report two cases of gelatinous cyst of the common peroneal nerve. They present two different approaches to surgical treatment used in their cases--decompression of the nerve trunk by simple drainage of the cyst in one case and total excision of the cyst and its wall with reconstruction of fascicles damaged by the lesion in another. Experiences and results of treatment by other authors are presented as well as their views on pathology and etiology of this rare entity.