1	Lymphoma/
2	exp Hodgkin Disease/
3	Germinoblastom$.tw,kf,ot.
4	Reticulolymphosarcom$.tw,kf,ot.
5	Hodgkin$.tw,kf,ot.
6	(malignan$ adj2 (lymphogranulom$ or granulom$)).tw,kf,ot.
7	or/1‐6
8	exp Positron‐Emission Tomography/
9	(pet$ or petscan$ or (Positron$ and emission$) or (Positron$ and tomography$)).tw,kf,ot.
10	(pet$ and (deoxy$ or fluor$ or 18fluor$ or fdg$ or 18fdg$ or fludeoxy$)).tw,kf,ot.
11	exp Tomography, Emission‐Computed/
12	(pet$ or petscan$).tw,kf,ot.
13	(tomograph$ or tomographs$ or tomographic$ or tomography$ or tomographies$).tw,kf,ot.
14	emission$.tw,kf,ot.
15	13 and 14
16	8 or 9 or 10 or 11 or 12 or 15
17	7 and 16
18	randomized controlled trial.pt.
19	controlled clinical trial.pt.
20	randomi?ed.ab.
21	placebo.ab.
22	clinical trials as topic.sh.
23	randomly.ab.
24	trial.ti.
25	or/18‐24
26	humans.sh.
27	25 and 26
28	17 and 27