Nodular hepatic lesion mimicking gallbladder carcinoma in myeloma.

An 81-year-old man was diagnosed with nodular hepatic lesion of extramedullary plasmacytoma with the absence of FDG uptake. Doppler ultrasonography showed pulsations and abundant blood flow signals within the tumor. The blood flow was temporally reduced after daratumumab-based induction therapy; however, the tumor rapidly re-expanded with blood reflow.