Abstract
Objectives
To evaluate characteristic features of mammography, ultrasound and magnetic resonance imaging (MRI) of sporadic breast cancer in women <40 years and to determine correlations with pathological and biological factors.
Methods
A retrospective review of radiological, clinicopathological and biological features of sporadic breast cancers for women under 40 years at our institution between 2007-2012 covering 91 patients. Mammography was available for 97 lesions, ultrasound for 94 and MRI for 38.
Results
The most common imaging features were masses, nearly all classified BI-RADS 4 or 5. On mammography microcalcifications alone accounted for 31 %, all suspicious. There were 42.6 % luminal B, 24.5 % luminal A, 19.1 % HER2-enriched and 10.6 % triple-negative (TN) tumours by immunohistochemistry. HER2 overexpression was correlated with the presence of calcifications at mammography (P = 0.03). TN cancers more often had an oval shape and abrupt interface at ultrasound and rim enhancement on MRI. MRI features were suspicious for all cancers and rim enhancement of a mass was a significant predictor of triple-negative tumours (P = 0.01).
Conclusions
The imaging characteristics of cancers in patients under 40 years without proven gene mutations do not differ from their older counterparts, but appear correlated to phenotypic profiles, which have a different distribution in young women compared to the general population.
Key Points
• Young women have more luminal B/HER2+ phenotypes than older women.
• The appearance of cancers is correlated with their biological profiles.
• Sporadic breast cancer imaging in young women is generally classified BI-RADS 4/5.
• Triple-negative cancers can be misinterpreted as benign, requiring thorough imaging analysis.
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Abbreviations
- MRI:
-
magnetic resonance imaging
- IDC:
-
invasive ductal carcinomas
- DCIS:
-
ductal carcinoma in situ
- ILC:
-
infiltrating lobular carcinoma
- ER:
-
oestrogen receptors
- PR:
-
progesterone receptors
- FISH:
-
fluorescent in situ hybridisation
- HER2:
-
human epidermal growth factor receptor 2
- TN:
-
triple negative
- ACR:
-
American College of Radiology
- BI-RADS:
-
Breast Imaging-Reporting and Data System
- PACS:
-
Agfa® picture archiving and communication system
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Acknowledgements
The authors thank Pippa McKelvie-Sebileau of Institut Bergonié for medical editorial assistance in English.
Conflicts of interest: The authors have no conflicts of interest to declare.
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Bullier, B., MacGrogan, G., Bonnefoi, H. et al. Imaging features of sporadic breast cancer in women under 40 years old: 97 cases. Eur Radiol 23, 3237–3245 (2013). https://doi.org/10.1007/s00330-013-2966-z
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DOI: https://doi.org/10.1007/s00330-013-2966-z