RT Journal Article SR Electronic T1 Mediastinal Masses in Nuclear Medicine Studies: A Diagnostic Algorithm JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 261 OP 262 DO 10.2967/jnmt.116.176461 VO 44 IS 4 A1 Feraco, Dana A1 Al-Faham, Zaid A1 Roumayah, Yezzin A1 Jolepalem, Prashant YR 2016 UL http://tech.snmjournals.org/content/44/4/261.abstract AB There are multiple reasons for an anterior mediastinal mass. In this case, we discuss possible etiologies and offer an algorithm to narrow the differential diagnosis. When the mass cannot be diagnosed radiographically, the next step in imaging is a physiologic assessment with radionuclide modalities.