Unusual Radiotracer Deposition to the Forearm After Intrahepatic Injection of 99mTc-Macroaggregated Albumin Using a Transradial Approach

Clin Nucl Med. 2022 Apr 1;47(4):e366-e367. doi: 10.1097/RLU.0000000000004090.

Abstract

Arterial mapping and 99mTc-macroaggregated albumin (99mTc-MAA) hepatic perfusion imaging are routinely performed before 90Y radioembolization of hepatic tumors. These procedures serve multiple purposes, including an anatomical survey of hepatic arterial anatomy, interrogating expected microsphere distribution to avoid nontargeted embolization during therapy, and evaluating for possible hepatopulmonary shunting. We present a case where 99mTc-MAA planar images revealed unexpected soft tissue uptake within the left forearm, an unexpected complication that may result from residual 99mTc-MAA in the catheter being expelled as the catheter is removed, which is particularly important to avoid during the 90Y radioembolization procedure given the risk for associated radionecrosis.

Publication types

  • Case Reports

MeSH terms

  • Albumins
  • Embolization, Therapeutic* / adverse effects
  • Embolization, Therapeutic* / methods
  • Forearm / diagnostic imaging
  • Humans
  • Liver Neoplasms* / diagnostic imaging
  • Microspheres
  • Technetium Tc 99m Aggregated Albumin
  • Yttrium Radioisotopes

Substances

  • Albumins
  • Technetium Tc 99m Aggregated Albumin
  • Yttrium Radioisotopes
  • Yttrium-90