Abstract: The authors reported a case of nodular fasciitis (NF) misdiagnosed as recurrence of Hodgkin's lymphoma (HL). The patient developed HL more than 2 years ago. This time the disease presents as a painful mass on the left shoulder, MRI and PET/CT examinations indicated the possibility of HL recurrence, and the pathological result of puncture confirmed NF. The authors analyzed the imaging and pathological features of NF and reviewed the relevant literature in order to share the experience in ¹⁸F-FDG PET/CT diagnosis of this type of cases.