[1-(11)C]acetate uptake is not increased in renal cell carcinoma.
OBJECTIVE
The purpose of this study was to investigate the potential of [1-(11)C]acetate (AC) as a metabolic tracer for renal cell cancer in human subjects.


METHODS
Twenty-one patients with suspected kidney tumours were investigated with AC and dynamic PET. AC uptake was scored on a five-step scale. Tumour localisation was known from CT/MRI. Histology was available in 18/21 patients. The results in these 18 patients are reported.


RESULTS
AC uptake by the tumour was less than (n=11), equal to (n=5) or higher than (n=2) uptake in the surrounding renal parenchyma. Histological tumour types showed a typical distribution, with a predominance of clear cell carcinomas (n=14) and only a small number of papillary cell carcinomas (n=2) and oncocytomas (n=2). Only the benign oncocytomas were highly positive with AC.


CONCLUSIONS
In most kidney tumours the AC accumulation was not higher than in normal kidney parenchyma. Therefore, AC PET cannot be recommend for the characterisation of a renal mass.
Kotzerke
J
J
Klinik und Poliklinik für Nuklearmedizin, Technische Universität Dresden und PET Zentrum Rossendorf, Dresden, Germany. joerg.kotzerke@mailbox.tu-dresden.de
Linné
C
C
Meinhardt
M
M
Steinbach
J
J
Wirth
M
M
Baretton
G
G
Abolmaali
N
N
Beuthien-Baumann
B
B
D000085:Acetates / Q000737:chemistry / Q000493:pharmacokinetics*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002250:Carbon Radioisotopes / Q000493:pharmacokinetics*; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000378:metabolism; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography / Q000379:methods; D013997:Time Factors
D000085:Acetates; D002250:Carbon Radioisotopes