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@ARTICLE{Kirchner:830413,
author = {Kirchner, Julian and Schaarschmidt, Benedikt Michael and
Sawicki, Lino Morris and Heusch, Philipp and Hautzel,
Hubertus and Ermert, Johannes and Rabenalt, Robert and
Antoch, Gerald and Buchbender, Christian},
title = {{E}valuation of {P}ractical {I}nterpretation {H}urdles in
68{G}a-{PSMA} {PET}/{CT} in 55 {P}atients},
journal = {Clinical nuclear medicine},
volume = {42},
number = {7},
issn = {0363-9762},
address = {Philadelphia, Pa.},
publisher = {Lippincott Williams $\&$ Wilkins},
reportid = {FZJ-2017-03962},
pages = {e322 - e327},
year = {2017},
abstract = {PurposeTo investigate the physiologic 68Ga-PSMA
distribution and evaluate focal or diffuse radiotracer
uptake in nonprostate cancer malignancies and in incidental
findings.Methods68Ga-PSMA PET/CT scans in 55 men performed
for prostate cancer (49) or renal cell carcinoma (6) staging
were analyzed retrospectively. Two radiologists evaluated
the datasets in 2 reading sessions. First, physiological
68Ga-PSMA uptake was evaluated. Second, scans were analyzed
for incidental uptake. SUVmax and SUVmean were recorded.
Other imaging modalities, histopathology, or clinical
follow-up served as standard of reference.ResultsHomogenous
68Ga-PSMA uptake of the lacrimal glands (SUVmax, 15.7 ±
7.2), parotid glands (SUVmax, 24.4 ± 8.1), submandibular
glands (SUVmax, 26.7 ± 7.1), vocal cords (SUVmax, 8.4 ±
3), Waldeyer ring (SUVmax, 10.4 ± 4.3), liver (SUVmax, 8.2
± 2.5), spleen (SUVmax, 10.9 ± 3.9), kidneys (SUVmax, 66.4
± 25.4), and pars descendens duodeni (SUVmax, 17.6 ± 8.9)
was observed in all patients. In $65\%$ and $36\%,$
respectively, homogenous 68Ga-PSMA uptake of the colon
descendens (SUVmax, 10.6 ± 9.2) and the rectum (SUVmax, 3.7
± 1.1) was found. Approximately $22\%$ exhibited a
68Ga-PSMA uptake of the thyroid (SUVmax, 4.5 ± 1.2), and
$21\%$ exhibited a 68Ga-PSMA uptake of the knee’s synovia
(SUVmax, 2.9 ± 0.2). Furthermore, 68Ga-PSMA uptake was
found in 1 patient because of fibrous dysplasia of the right
os ilium (SUVmax, 7.7).ConclusionsPhysiologic distribution
of 68Ga-PSMA comprises uptake in lacrimal and salivary
glands, vocal cords, Waldeyer ring, liver, spleen, and
kidneys as well as various parts of the intestine. Moreover,
nonspecific tracer uptake is regularly found in the thyroid
and the synovia of the knee. Incidental 68Ga-PSMA uptake can
occasionally reveal nonprostate cancer–associated
remodeling processes, such as fibrous dysplasia.},
cin = {INM-5},
ddc = {610},
cid = {I:(DE-Juel1)INM-5-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000402747200001},
pubmed = {pmid:28481787},
doi = {10.1097/RLU.0000000000001672},
url = {https://juser.fz-juelich.de/record/830413},
}