Effectiveness of Breast MRI and 18F-FDG PET/CT for the Preoperative Staging of Invasive Lobular Carcinoma versus Ductal Carcinoma.
- Author:
Na Young JUNG
1
;
Sung Hoon KIM
;
Sung Hun KIM
;
Ye Young SEO
;
Jin Kyoung OH
;
Hyun Su CHOI
;
Won Jong YOU
Author Information
- Publication Type:Original Article
- Keywords: 18F-fluorodeoxyglucose positron emission tomography/computed tomography; Breast; Ductal carcinoma; Lobular carcinoma; Magnetic resonance imaging
- MeSH: Breast*; Carcinoma, Ductal*; Carcinoma, Lobular*; Electrons; Fluorodeoxyglucose F18*; Lymph Nodes; Magnetic Resonance Imaging*; Neoplasm Metastasis; Positron-Emission Tomography and Computed Tomography*; Sensitivity and Specificity
- From:Journal of Breast Cancer 2015;18(1):63-72
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: We evaluated the utility of magnetic resonance imaging (MRI) and 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) for the preoperative staging of invasive lobular carcinoma (ILC) of the breast and compared the results with those of invasive ductal carcinoma (IDC). METHODS: The study included pathologically proven 32 ILCs and 73 IDCs. We compared clinical and histopathological characteristics and the diagnostic performances of MRI and 18F-FDG PET/CT for the primary mass, additional ipsilateral and/or contralateral lesion(s), and axillary lymph node metastasis between the ILC and IDC groups. RESULTS: Primary ILCs were greater in size, but demonstrated lower maximum standardized uptake values than IDCs. All primary masses were detected on MRI. The detection rate for ILCs (75.0%) was lower than that for IDCs (83.6%) on 18F-FDG PET/CT, but the difference was not significant. For additional ipsilateral lesion(s), the sensitivities and specificities of MRI were 87.5% and 58.3% for ILC and 100.0% and 66.7% for IDC, respectively; whereas the sensitivities and specificities of 18F-FDG PET/CT were 0% and 91.7% for ILC and 37.5% and 94.7% for IDC, respectively. The sensitivity of 18F-FDG PET/CT for ipsilateral lesion(s) was significantly lower in the ILC group than the IDC group. The sensitivity for ipsilateral lesion(s) was significantly higher with MRI; however, specificity was higher with 18F-FDG PET/CT in both tumor groups. There was no significant difference in the diagnostic performance for additional contralateral lesion(s) or axillary lymph node metastasis on MRI or 18F-FDG PET/CT for ILC versus IDC. CONCLUSION: The MRI and 18F-FDG PET/CT detection rates for the primary cancer do not differ between the ILC and IDC groups. Although 18F-FDG PET/CT demonstrates lower sensitivity for primary and additional ipsilateral lesions, it shows higher specificity for additional ipsilateral lesions, and could play a complementary role in the staging of ILC as well as IDC.
