ABSTRACT
A 7-month-old boy with malignant rhabdoid tumor of the right lateral neck, status post resection and chemotherapy, underwent FDG PET/CT for restaging. The images showed diffuse increased activity in the spleen and in the bone marrow of the appendicular bones and the spine, which is related to hematopoietin administered after chemotherapy. The images also revealed intense activity in the region of sphenoid bone, which is not a common region to have elevated FDG activity. The subsequent MRI scan showed that this activity was due to not-yet-converted red marrow in the sphenoid bone in this pediatric patient.
Subject(s)
Fluorodeoxyglucose F18 , Sphenoid Bone/diagnostic imaging , Humans , Infant , Magnetic Resonance Imaging , Male , Positron Emission Tomography Computed Tomography , Rhabdoid Tumor/complications , Rhabdoid Tumor/diagnostic imaging , Rhabdoid Tumor/pathology , Skull Neoplasms/complications , Skull Neoplasms/diagnostic imaging , Skull Neoplasms/pathology , Sphenoid Bone/pathologyABSTRACT
Soft tissue metastases from neuroblastoma very rarely occur without concurrent osseous metastases. We report 1 case of non-MIBG-avid, high-risk neuroblastoma in a pediatric patient who had widespread soft tissue metastases without concurrent osseous lesion on FDG PET/CT imaging.