Keywords:
Genital / Reproductive system male, Hybrid Imaging, Oncology, PET-CT, CT, Diagnostic procedure, Molecular imaging, Radiobiology, Neoplasia, Multidisciplinary cancer care
Authors:
M. Garcia Fontes1, V. V. Gigirey2, M. Rodriguez Parodi2, L. Servente2, G. dos santos2, L. Valuntas2, E. Otero2, B. Escudero2, O. Alonso2; 1Montevideo, MV/UY, 2Montevideo/UY
DOI:
10.26044/ecr2019/C-1730
Results
Of the 733 patients analyzed,
39 presented unexpected findings (p < 0.001).
We considered an unexpected finding those where the morphology and/or topography of the lesion or distribution of the radiotracer was unexpected for metastasis from prostate cancer.
Of the unexpected findings 25 were pulmonary (64%) and 14 in other locations (36%,
P < 0.0001).
Of the pulmonary ones: 5 corresponded to primary lung cancer,
one presented mild uptake in a pulmonary BK infiltrate and in some consolidations and pulmonary cavities of an inflammatory cause.
One case corresponded to an inflammatory peritoneal collection.
Of the 14 findings in other locations: 1 show uptake in the brainstem,
1 in the amygdala,
one in the left piriform sinus,
2 in the esophagus,
3 corresponded to peritoneal carcinomatosis,
one a probably hepatic cholangiocarcinoma,
2 osseous enchondromas and 4 to Paget's disease.
We stand out that in the first studies we reported and given the low frequency,
we considered unexpected findings metastases in some rare regions such as mediastinal and supraclavicular lymph nodes,
pulmonary nodules,
peritoneal nodules,
etc ...
but in our bibliographic research,
we found an Autopsy review of 1569 patients were it was demonstrated the distribution and frequency of prostate cancer metastasis,
which probably are not frequently seen with conventional imaging because of their small size,
and in these cases,
the metabolic component of PET CT allows their detection .