CT-based body composition in diffuse large B cell lymphoma patients: changes after treatment and association with survival.
Radiol Med
; 128(12): 1497-1507, 2023 Dec.
Article
em En
| MEDLINE
| ID: mdl-37752299
ABSTRACT
PURPOSE:
Primary purpose was to assess changes of bone mineral density (BMD) in diffuse large B cell lymphoma (DLBCL) patients treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone R-CHOP (like) chemotherapy regimen. Secondary purposes were to assess other body composition features changes and to assess the association of pre-therapy values and their changes over time with survival. MATERIAL ANDMETHODS:
Patients selected underwent R-CHOP(like) regimen for DLBCL, and underwent PET-CT before and after treatment. Main clinical data collected included body mass index, date of last follow-up, date of progression, and date of death. From the low-dose CT images, BMD was assessed at the L1 level; the other body composition values, including muscle and fat distribution, were assessed at the L3 level by using a dedicated software. Descriptive statistics were reported as median and interquartile range, or frequencies and percentages. Statistical comparisons of body composition variables between pre- and post-treatment assessments were performed using the Wilcoxon matched pairs signed rank test. Non-normal distribution of variables was tested with the Shapiro-Wilk test. For qualitative variables, the Fisher exact test was used. Log rank test was used to compare survival between different subgroups of the study population defined by specific body composition cutoffs. The significance level was set at p < 0.05.RESULTS:
Eighty-two patients were included. The mean follow-up was 37.5 ± 21.4 months. A significant difference was found in mean BMD before and after R-CHOP(like) treatment (p < 0.0001). The same trend was observed for mean skeletal muscle area (SMA) (p = 0.004) and mean skeletal muscle index (SMI) (p = 0.006). No significant association was demonstrated between body composition variables, PFS and OS.CONCLUSION:
R-CHOP(like) treatment in DLBCL patients was associated with significant reduction of BMD, SMA and SMI.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Linfoma Difuso de Grandes Células B
/
Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada
Tipo de estudo:
Qualitative_research
/
Risk_factors_studies
Limite:
Humans
Idioma:
En
Revista:
Radiol Med
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Suíça