Fluorine-18-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in a Giant Left Pectoral Muscle Plasmacytoma and Multiple Myeloma Case

Néstor Martínez-Amador; Remedios Quirce; Isabel Martínez-Rodríguez; Blanca Lucas-Velázquez; Cristina Fernández-Martínez; Ignacio Banzo

doi:10.4103/ijnm.IJNM_83_19

Fluorine-18-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in a Giant Left Pectoral Muscle Plasmacytoma and Multiple Myeloma Case

Indian J Nucl Med. 2019 Oct-Dec;34(4):341-343. doi: 10.4103/ijnm.IJNM_83_19.

Authors

Néstor Martínez-Amador¹, Remedios Quirce¹, Isabel Martínez-Rodríguez¹, Blanca Lucas-Velázquez¹, Cristina Fernández-Martínez², Ignacio Banzo¹

Affiliations

¹ Department of Nuclear Medicine, Valdecilla University Hospital, Molecular Imaging Group (IDIVAL), University of Cantabria, Santander, Spain.
² Department of Hematology, Valdecilla University Hospital, University of Cantabria, Santander, Spain.

Abstract

Extramedullary plasmacytoma is an unusual manifestation in multiple myeloma (MM). It can present as a solitary bone lesion and/or soft-tissue mass. Plasmacytoma can be presented at any location, but it is more common in the head and neck, usually without systemic involvement. The presence of plasmacytoma in MM is a predictor of rapidly progressive disease. The value of fluorine-18-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (PET-FDG) is increasing, in the diagnosis, detection of occult lesions, and therapeutic monitoring. We describe a patient with rapidly-progressive, refractory, left pectoral muscle plasmacytoma and MM. A PET-FDG guided the therapy and allowed to identify the presence of disease relapse.

Keywords: Extramedullary plasmacytoma; fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography; intramuscular plasmacytoma; multiple myeloma; soft-tissue plasmacytoma.