Fig. 4From: 18F-FDG PET/CT imaging findings in anaplastic large cell lymphoma, a rare subtype of lymphomaNodal involvement alone, simultaneous nodal and extranodal involvement, and extranodal involvement alone in ALK-positive and ALK-negative ALCL patients. There were significant differences in nodal involvement alone and extranodal involvement alone between ALK-positive and ALK-negative ALCL patients (*: P < 0.05)Back to article page