Overview of all patients' FDG-PET and CT results during and after therapy as well as clinical follow-up information. ○ and • represent negative and positive FDG-PET scans, respectively. □ and ▪ represent satisfactory and unsatisfactory remission on CT, respectively. Early-stage patients are sorted according to numbers of chemotherapy cycles given and subsequently FDG-PET results after 2 and 4 cycles. Advanced-stage patients are sorted according to PET results. PE indicates physical examination (patient no. 70); RD, refractory disease; IFRT, involved field radiotherapy; Prog, progression; CR, complete remission; CRu, complete remission uncertain; PR, partial remission; and PR-, unsatisfactory partial remission. ^*Restaging after completion of chemotherapy using conventional restaging methods.