We report the case of a 52-year old cytomegalovirus-(CMV)-negative pat
ient, who underwent liver transplantation (CMV-positive donor). Follow
ing a flu-like illness 6 weeks after transplantation he developed tetr
aplegia with breathing difficulties within 24 hours. A diagnosis of ac
ute Guillain-Barre syndrome (CBS) was made. Routine tests for CMV anti
gen were negative on day 6 and 7 of the disease. On day 8 CMV antigen
test became positive and elevated IgM and IgG-titres against CMV were
detected one day later. After 20 days of ganciclovir CMV antigen was n
o longer detectable; however, the neurological symptomatology remained
unchanged. Thirteen months later he was able to walk again with a sti
ck. The close monitoring for CMV infection prior to the evolving GES i
llustrates the dynamics of this parainfectious process. Acute and chro
nic immune reactions to the graft are discussed as further inductors o
f the CBS. Besides, our case shows specific problems of GBS therapy pa
rticularly in liver transplantation.