24.10.2019 | Technical Report
Brown adipose tissue and cancer progression
verfasst von:
Katrina Chu, Stijn A. Bos, Corey M. Gill, Martin Torriani, Miriam A. Bredella
Erschienen in:
Skeletal Radiology
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Ausgabe 4/2020
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Abstract
Objective
The purpose of our study was to determine the role of brown adipose tissue (BAT) in cancer progression.
Materials and methods
Our study was approved by our institutional review board and Health Insurance Portability and Accountability Act–compliant. Our study group comprised 132 cancer patients (116 f, 16 m; mean age 50 ± 16 years) who underwent F18-FDG PET/CT per standard clinical protocol, for staging or surveillance of cancer. We included patients who were BAT-positive on PET/CT and had clinical follow-up data available for at least 12 months or until tumor recurrence or tumor-related death, whichever occurred first. BAT volume by PET/CT was quantified by PET-CT Viewer shareware. Clinical information including tumor type, tumor recurrence, survival, and outside temperature at time of scan were recorded. Cox proportional hazard models were used to determine longitudinal associations between BAT volume and tumor recurrence/mortality.
Results
There were 55 tumor recurrences/tumor-related deaths over a median follow-up period of 71 (33; 110 interquartile range) months. Higher BAT volume was associated with an increased likelihood of tumor recurrence/tumor-associated mortality after adjustment for covariates (p = 0.03).
Conclusion
BAT volume, assessed using routine PET/CT, is a predictor of tumor recurrence/mortality in patients with cancer, independent of other factors that can influence BAT activity, such as sex, age, BMI, or tumor type.