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Erschienen in: European Radiology 4/2024

09.10.2023 | Nuclear Medicine

The prognostic value of bone marrow retention index and bone marrow-to-liver ratio of baseline 18F-FDG PET/CT in diffuse large B-cell lymphoma

verfasst von: Ahmed El-Azony, Mohammad Abd Alkhalik Basha, Yassir Edrees Almalki, Bader Abdelmaksoud, Nabila Hefzi, Ahmed A. Alnagar, Sheren Mahdey, Ismail Mohamed Ali, Ibrahim Nasr, Ahmed A. El-Hamid M. Abdalla, Hala Y. Yousef, Mohamed M. A. Zaitoun, Saeed Bakry Elsayed, Mohamad Gamal Nada, Mohamed I. Amin, Rania Mostafa Hassan, Susan Adil Ali, Tamer Mahmoud Dawoud, Sameh Abdelaziz Aly, Youssef H. Algazzar, Heba Abdelhamed

Erschienen in: European Radiology | Ausgabe 4/2024

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Abstract

Objective

To determine prognostic value of bone marrow retention index (RI-bm) and bone marrow-to-liver ratio (BLR) measured on baseline dual-phase 18F-FDG PET/CT in a series of newly diagnosed patients with diffuse large B-cell lymphoma (DLBCL) treated homogeneously with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) chemotherapy.

Patients and methods

This prospective study enrolled 135 patients with newly diagnosed DLBCL. All patients underwent dual-phase 18F-FDG PET/CT. The following PET parameters were calculated for both tumor and bone marrow: maximum standardized uptake value (SUVmax) at both time points (SUVmax early and SUVmax delayed), SUVmax increment (SUVinc), RI, and BLR. Patients were treated with R-CHOP regimen and response at end of treatment was assessed.

Results

The final analysis included 98 patients with complete remission. At a median follow-up of 22 months, 57 patients showed no relapse, 74 survived, and 24 died. The 2-year relapse-free survival (RFS) values for patients with higher and lower RI-bm were 20% and 65.1%, respectively (p < 0.001), and for patients with higher and lower BLR were 30.2% and 69.6%, respectively (p < 0.001). The 2-year overall survival (OS) values for patients with higher and lower RI-bm were 60% and 76.3%, respectively (p = 0.023), and for patients with higher and lower BLR were 57.3% and 78.6%, respectively (p = 0.035). Univariate analysis revealed that RI-bm and BLR were independent significant prognostic factors for both RFS and OS (hazard ratio [HR] = 4.02, p < 0.001, and HR = 3.23, p < 0.001, respectively) and (HR = 2.83, p = 0.030 and HR = 2.38, p = 0.041, respectively).

Conclusion

Baseline RI-bm and BLR were strong independent prognostic factors in DLBCL patients.

Clinical relevance statement

Bone marrow retention index (RI-bm) and bone marrow-to-liver ratio (BLR) could represent suitable and noninvasive positron emission tomography/computed tomography (PET/CT) parameters for predicting pretreatment risk in patients with newly diagnosed diffuse large B-cell lymphoma (DLBCL) who were treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) chemotherapy.

Key Points

Bone marrow retention index (RI-bm) and bone marrow-to-liver ratio (BLR) are powerful prognostic variables in diffuse large B-cell lymphoma (DLBCL) patients.
High BLR and RI-bm are significantly associated with poor overall survival (OS) and relapse-free survival (RFS).
RI-bm and BLR represent suitable and noninvasive risk indicators in DLBCL patients.
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Metadaten
Titel
The prognostic value of bone marrow retention index and bone marrow-to-liver ratio of baseline 18F-FDG PET/CT in diffuse large B-cell lymphoma
verfasst von
Ahmed El-Azony
Mohammad Abd Alkhalik Basha
Yassir Edrees Almalki
Bader Abdelmaksoud
Nabila Hefzi
Ahmed A. Alnagar
Sheren Mahdey
Ismail Mohamed Ali
Ibrahim Nasr
Ahmed A. El-Hamid M. Abdalla
Hala Y. Yousef
Mohamed M. A. Zaitoun
Saeed Bakry Elsayed
Mohamad Gamal Nada
Mohamed I. Amin
Rania Mostafa Hassan
Susan Adil Ali
Tamer Mahmoud Dawoud
Sameh Abdelaziz Aly
Youssef H. Algazzar
Heba Abdelhamed
Publikationsdatum
09.10.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 4/2024
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-023-10150-z

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