Sixteen-year-old girl suffering from a diffuse large B cell lymphoma (Table
, patient 5). The lymphoma was primary localized in the left lung and pleura (A, B). Initial SUVmax was 10.7 and decreased to 4.2 at interim (A and C; visual iPET-positive, Δ SUVmax 60.7%). Thus, PET approaches suggested residual disease at interim. CIM findings at interim showed massive reduction in size (arrow head, D) and disappearance of all other foci corresponding to a complete response unconfirmed. The patient is in ongoing remission (CIM, true-negative; visual iPET, false-positive; Δ SUVmax, false-positive).