PET/MR in invasive ductal breast cancer: correlation between imaging markers and histological phenotype

Onofrio Antonio Catalano, Gary Lloyd Horn, Alberto Signore, Carlo Iannace, Maria Lepore, Mark Vangel, Angelo Luongo, Marco Catalano, Constance Lehman, Marco Salvatore, Andrea Soricelli, Ciprian Catana, Umar Mahmood, Bruce Robert Rosen

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14 Scopus citations

Abstract

Background:Differences in genetics and receptor expression (phenotypes) of invasive ductal breast cancer (IDC) impact on prognosis and treatment response. Immunohistochemistry (IHC), the most used technique for IDC phenotyping, has some limitations including its invasiveness. We explored the possibility of contrast-enhanced positron emission tomography magnetic resonance (CE-FDG PET/MR) to discriminate IDC phenotypes.Methods:21 IDC patients with IHC assessment of oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor-2 (HER2), and antigen Ki-67 (Ki67) underwent CE-FDG PET/MR. Magnetic resonance-perfusion biomarkers, apparent diffusion coefficient (ADC), and standard uptake value (SUV) were compared with IHC markers and phenotypes, using a Student’s t-test and one-way ANOVA.Results:ER/PR− tumours demonstrated higher Kepmean and SUVmax than ER or PR+ tumours. HER2− tumours displayed higher ADCmean, Kepmean, and SUVmax than HER2+tumours. Only ADCmean discriminated Ki67⩽14% tumours (lower ADCmean) from Ki67>14% tumours. PET/MR biomarkers correlated with IHC phenotype in 13 out of 21 patients (62%; P=0.001).Conclusions:Positron emission tomography magnetic resonance might non-invasively help discriminate IDC phenotypes, helping to optimise individual therapy options.British Journal of Cancer advance online publication, 16 February 2017; doi:10.1038/bjc.2017.26 www.bjcancer.com.

Original languageEnglish (US)
JournalBritish Journal of Cancer
DOIs
StateAccepted/In press - Feb 16 2017

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ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Catalano, O. A., Horn, G. L., Signore, A., Iannace, C., Lepore, M., Vangel, M., Luongo, A., Catalano, M., Lehman, C., Salvatore, M., Soricelli, A., Catana, C., Mahmood, U., & Rosen, B. R. (Accepted/In press). PET/MR in invasive ductal breast cancer: correlation between imaging markers and histological phenotype. British Journal of Cancer. https://doi.org/10.1038/bjc.2017.26