[Intraneural ganglion of the tibial nerve--a case report].

This paper describes a surgically treated case of gelatinous cyst of extremely rare location within the tibial nerve at the level of the popliteal fossa. The initial diagnosis was based on imaging exams (MRI, ultrasonography) and surgical exploration of the tumour. The intraneural ganglion was completely removed. Neurological motor and sensory deficits were observed neither in the preoperative nor in the postoperative period. The ultimate diagnosis was established based on the histopathological examination.