This case report shows for the first time the usefulness of positron e
mission tomography (PET) with 2-[F-18]-fluoro-2-deoxy-D-glucose (FDG)
in the diagnosis of primary non Hodgkin's lymphoma of the liver. Resul
ts of FDG-PET, which in contrast to other imaging techniques offers th
e advantage of screening the whole body, demonstrated a high glycolyti
c activity of a solitary mass in the liver with central necrosis (loss
of glycolytic activity), but no spread of lymphoma to the body. These
results were confirmed by ultrasound, computed tomography, magnetic r
esonance imaging and were biopsy proven. From our findings we conclude
that in patients with liver masses with high uptake of FDG, lack of l
iver dysfunction and absence of signs indicating other malignancies, a
primary lymphoma of the liver should be considered as a possible diag
nosis. (C) 1997 Elsevier Science Ireland Ltd.