Atât sistemul nervos central, cât şi cel periferic pot fi afectate de maladii oncologice, complicaţiile neurologice survenind la 15-20% pacienţi cu cancer de diferită origine. Complicaţiile neurologice pot apărea concomitent cu una de cancer sau cu mult înainte de diagnosticul propriu-zis al neoplasmului. Orişice compartiment structural al sistemului nervos, fi e central sau periferic, poate fi afectat de câtre procesul tumoral prin cele mai diverse mecanisme: infi ltrare directă, invazie metastatică, leziune la distanţă prin reacţii autoimune specifi ce, tratament radio şi chimioterapic. Limfoamele maligne sînt următorul grup de maladii de profi l oncologic după cancerul pulmonar, care înregistrează o incidenţă sporită de afectare a sistemului nervos. Studiului electrofi ziologic îi revine rolul de apreciere a tipului de afectare a sistemului nervos, a gradului de gravitate şi extensie a procesului.

The central nervous system as the peripheral one can be affected by oncological diseases, main neurological complications counting up to 15-20% of all oncological patients with cancer of diverse origins. These complications can occur in parallel with a cancer or can be diagnosed long before the diagnosis of cancer is made. Each structural compartment of the nervous system can be involved either central or peripheral one. The mechanisms of such involvement can be trough direct infiltration, metastatic invasion, remote effect trough specific autoimmune mechanisms, radiotherapy or chemotherapy.The malignant lymphomas are the second cause of oncological groups of diseases after lung cancer which registers a high incidence of nervous system involvement. Electrophysiological study has the main role in appreciation of the type of nervous system involvement, the appreciation of the severity and the extension of nervous system involvement.