Granulomatosis after autologous stem cell transplantation in nonHodgkin lymphomaBoltežar, Lučka (Avtor) Žagar, Ivana (Avtor) Jezeršek Novaković, Barbara (Avtor) granulomatosisnonHodgin lymphomaPET-CTdifferential diagnosisSarcoidosis before and after treatment of malignancy is an important differential diagnosis that has to be distinguished from lymphoma. Patients and methods. Hodgkin lymphoma, diffuse large B-cell lymphoma and aggressive follicular lymphoma are being staged and treatment effect is evaluated with PET-CT. We report three cases of aggressive lymphoma after high dose therapy and autologous stem cell transplantation with positive lymph nodes on PET-CT, which were histologically diagnosed as sarcoidosis/granulomatosis. In the literature, we found that false positive lymph nodes were more common after allogeneic than after autologous transplantation. Conclusions. Post-treatment PET-CT positive lymph nodes should always be examined histologically prior to any further treatment decision to avoid unnecessary toxic procedures.Association of Radiology and Oncology20162024-04-30 10:31:24Neznano18851UDK: 616-006ISSN pri članku: 1318-2099DOI: 10.1515/raon-2015-0033COBISS_ID: 2058619Ljubljanaslby Authors