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. 2021 Feb;65(1):38-45.
doi: 10.1111/1754-9485.13114. Epub 2020 Oct 20.

Alternative volumetric PET pjmirometers for evaluation of breast cancer cases with 18F-FDG PET/CT imaging: Metabolic tumour volume and total lesion glycolysis

Esra Arslan  1 , Didem Can Trabulus  2 , Özlem Mermut  3 , Taha Cumhan Şavlı  4 , Tevfik Fikret Çermik  1
Affiliations

Alternative volumetric PET pjmirometers for evaluation of breast cancer cases with 18F-FDG PET/CT imaging: Metabolic tumour volume and total lesion glycolysis

Esra Arslan et al. J Med Imaging Radiat Oncol. 2021 Feb.

Abstract

Introduction: We aimed to investigate the prognostic and clinical values of two volumetric PET pjmirometers used in conjunction with SUVmax at different thresholds in invasive ductal carcinoma (IDC).

Methods: A total of 139 metastatic IDC BC who underwent 18F-FDG PET/CT imaging were included to study. MTV and TLG (40%, 50%, 60% and 70%) used in conjunction with primary tumour SUVmax . Nodal involvement, distant metastasis, ER, PR, Ki-67 expression and survival data evaluated by comparing FDG PET pjmirometers.

Results: Mean ± SD SUVmax of lesions (n = 139) was 13.97 ± 9.21. Primary tumour 18F-FDG uptake associated increased tumour diameter (>2 cm), high Ki-67 (>15%) and distant organ metastasis (DOM) (P = 0.015, 0.005 and 0.016, respectively). There was significant association between molecular subtypes and SUVmax (P = 0.002). High MTV associated with tumour diameter (MTV 40-70%), axillary lymph node (ALN) diameter (MTV 40-70%), and distant nodal metastasis (DNM) (MTV 50-70%). High TLG associated with tumour diameter (TLG 40-70%), high Ki-67 (TLG 40-70%), ALN metastasis (TLG 40%), ALN diameter (TLG 40-70%) and DNM (TLG 40-70%). Median survival found shorter in DOM patients (P = 0.030, Log Rank = 0.110).

Conclusion: We think evaluation of MTV and TLG at different thresholds in addition to SUVmax would enhance diagnostic and prognostic value of 18F-FDG PET/CT, and thus contribute to disease management.

Keywords: 18F-fluorodeoxyglucose positron emission tomography/computed tomography; breast cancer; metabolic tumour volume; total lesion glycolysis.

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