Vol 14, No 2 (2011)
Research paper
Published online: 2012-01-04
A false-positive finding in therapeutic evaluation: hypermetabolic axillary lymph node in a lymphoma patient following FDG extravasation
Nucl. Med. Rev 2011;14(2):109-111.
Abstract
We report a case of a false-positive finding in FDG PET/CT following
radiotracer extravasation. A 15-year-old male patient was
referred for therapeutic evaluation status post-chemotherapy for
a lymphoblastic lymphoma. FDG PET/CT showed discordant
findings with a marked decrease in a liver/hepatic hilum uptake,
disappearance of a subcutaneous left supraclavicular uptake, and
appearance of intense right axillary nodal uptake. Extravasation in
the right superior limb was noted. Comparison with the previous
scan showed that the axillary nodes were present, measured less
than 1 cm in their short axis, had not increased in size, and had
a fatty hilum. We concluded that FDG uptake was caused by a
migration in lymphatic vessels.
Nuclear Med Rev 2011; 14, 2: 109–111
Nuclear Med Rev 2011; 14, 2: 109–111
Keywords: FDG PET/CTtherapy response assessmentextravasation
