Report on the 5th International Workshop on Positron Emission Tomography in Lymphoma held in Menton, France, 19-20 September 2014.

Two hundred and thirty-six nuclear medicine physicians, radiologists and hematologists from 28 countries attended the 5th International Workshop on Postron Emission Tomography (PET) in Lymphoma held in Menton, France in September 2014. Forty-five scientific posters were presented. Following Lugano recommendations, the aim of the 5th workshop was to implement PET/computed tomography (CT) interpretation in a quantitative way (Q-PET) and how to use the new proposed metrics such as metabolic tumor volume (MTV). These parameters, in turn, could be combined with clinical, biological and molecular markers to build new indices for better patient risk stratification and to guide personalized therapy. New imaging techniques such as PET/magnetic resonance imaging (MRI) and genomics related to tumor morphological and structural characteristics and PET for assessment of response to new drugs and targeted therapies was also addressed. Finally, a section dedicated to imaging of pediatric lymphoma was also introduced.