A 64-year-old man was treated with multiagent chemotherapy owing to high-grade non-Hodgkin lymphoma presenting as a bulky disease involving the spleen. Interim and posttreatment sequential FDG PET/CT scans revealed a residual splenic mass showing markedly intense FDG uptake suspected of a residual viable lymphoma. To definitely decide about the appropriate treatment, a laparoscopic splenectomy was performed. Histopathologic specimen was compatible with the rare diagnosis of postchemotherapy histiocyte-rich pseudotumor of the spleen, a potential pitfall simulating viable disease on FDG PET/CT.
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http://dx.doi.org/10.1097/RLU.0000000000002568 | DOI Listing |
Eur Radiol
January 2025
Department of Radiation Oncology, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.
Purpose: To evaluate the prognostic value of interim [F]Fluorodeoxyglucose positron emission tomography/computed tomography ([F]FDG PET/CT) after immunotherapy-based systemic therapies in extranodal natural killer/T-cell lymphoma (ENKTL).
Patients And Methods: We retrospectively recruited 133 newly diagnosed nasal-type ENKTL patients who underwent interim [F]FDG PET/CT scans after 2-4 cycles of immunotherapy-based treatments. Interim PET/CT was interpreted by maximum standardized uptake value (SUV), Deauville 5-point scale (DS), and early treatment response.
Radiology
January 2025
From the Department of Radiology, University Hospital Halle, Ernst-Grube-Strasse 40, 06120 Halle (Saale), Germany (D.S., J.S., J.M.B.); Department of Nuclear Medicine, University of Leipzig, Leipzig, Germany (L.K., T.W.G., R.K.); Diagnostic Imaging and Pediatrics, Warren Alpert Medical School, Brown University, Providence, RI (K.M.M.); Department of Pediatric Radiology, Imaging and Radiation Oncology, Core-Rhode Island, Providence, RI (K.M.M.); Department of Oncology, St Jude Children's Research Hospital, Memphis, Tenn (J.E.F.); Department of Pediatric Hematology and Oncology, University Hospital Giessen-Marburg, Giessen, Germany (C.M.K., D.K.); Medical Faculty of the Martin Luther University of Halle-Wittenberg, Halle (Saale) Germany (C.M.K.); Department of Radiology, University of Wisconsin-Madison, Madison, Wis (S.Y.C.); Roswell Park Comprehensive Cancer Center, Buffalo, NY (K.M.K.); Department of Radiation Oncology, Medical Faculty of the Martin-Luther-University, Halle (Saale), Germany (T.P., D.V.); Department of Radiation Oncology, Mayo Clinic-Jacksonville, Jacksonville, Fla (B.S.H.); Department of Radio-Oncology, Medical University Vienna, Vienna, Austria (K.D.); and Department of Radiology, Boston Children's Hospital and Harvard Medical School, Boston, Mass (S.D.V.).
Staging of pediatric Hodgkin lymphoma is currently based on the Ann Arbor classification, incorporating the Cotswold modifications and the Lugano classification. The Cotswold modifications provide guidelines for the use of CT and MRI. The Lugano classification emphasizes the importance of CT and PET/CT in evaluating both Hodgkin lymphoma and non-Hodgkin lymphoma but focuses on adult patients.
View Article and Find Full Text PDFNucl Med Commun
January 2025
Department of Radiology.
Purpose: The primary objective of this study was to explore the prognostic significance of serum cholinesterase (CHE) and metabolic parameters obtained from 18F-fluorodeoxyglucose (FDG) PET/computed tomography (CT) scans in patients with nonsmall cell lung cancer (NSCLC).
Methods: A retrospective observational cohort study was conducted with 202 NSCLC patients. Serum CHE was evaluated alongside metabolic tumor volume (MTV) and total lesion glycolysis (TLG) derived from PET/CT scans.
Nucl Med Commun
January 2025
Department of Nuclear Medicine.
The study aim was to evaluate whether reducing bed position acquisition time would result in significant detriment to image quality. Secondary aims were to compare effect of time of flight (TOF) and Q.Clear reconstructions and patient BMI on image quality.
View Article and Find Full Text PDFEur J Nucl Med Mol Imaging
January 2025
Department of Nuclear Medicine, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China.
Purpose: We aimed to explore the value of [Ga]Ga‑FAPI PET/CT for the evaluation of Langerhans cell histiocytosis (LCH) in comparison with [F]FDG PET/CT.
Methods: Thirty-two patients pathologically diagnosed with LCH were enrolled in this study. [Ga]Ga‑FAPI and [F]FDG PET/CT were performed within 1 week to identify disease extent and status.
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