Martins, FilipeStalder, GregoireVan der Gucht, AxelGrandoni, FrancescoCairoli, Anne2018-12-132018-12-132018-12-132018-09-0110.1097/RLU.0000000000002180https://infoscience.epfl.ch/handle/20.500.14299/152466WOS:000450008600029We present an interesting image of a painless growing mass of the right arm in a 76-year-old man. A musculoskeletal MRI of the right arm showed a 7.5 x 3-cm homogeneous, well-defined mass, elongated along the course of muscle fascias and independent of the adjacent bone. A core-needle biopsy was performed, and the diagnosis of low-grade follicular lymphoma was established. Intramuscular lymphoma should be integrated into the differential diagnosis of tumors surrounding neurovascular structures, alongside peripheral nerve tumors and soft tissue sarcoma. MRI and whole-body F-18-FDG PET/CT features provided useful information to refine differential diagnosis in this case.Radiology, Nuclear Medicine & Medical ImagingRadiology, Nuclear Medicine & Medical Imagingfollicular lymphomaintramuscular lymphomamripetshort-ti inversion recovery (stir)t1-weighted images (t1w)musculoskeletal lymphomaimaging findingsmusclemritext::journal::journal article::research article