The commonly used Lugano staging system (see table Lugano Staging of Hodgkin Lymphoma and Non-Hodgkin Lymphoma) incorporates Symptoms Physical examination findings Results of imaging tests, including CT of the chest, abdomen, and pelvis, and functional imaging with FDG-PET Bone marrow biopsy (in selected cases) Although stage I non-Hodgkin lymphoma does occur, the disease is typically disseminated when first recognized. Table Diagnosis reference 1.