Abstract
Purpose: To describe the magnetic resonance characteristics of radial scars/complex sclerosing lesions (RS/CSL) of the breast using the current BI-RADS lexicon. To investigate the value of diffusion weighted imaging to predict malignancy.
Patients and Methods: From 2010 to 2017, we have found 25 women with architectural distortion at mammography who underwent surgical resection with a final hystopathologic report of RS/CSL. For the description of MRI findings, we adhered to BI-RADS classification (5th edition).
Results: The final pathological diagnosis was: “pure” RS/CSL in 7 cases (28%), RS/CSL with associated high risk lesions in 12 (48%) and 6 cases (24%) were associated with malignancy.
Magnetic resonance findings: four of 25 negative or focus. Five of 25 mass enhancement: irregular, non circumscribed spiculated mass with heterogeneous or rim enhancement and most with type II curves. Sixteen of 25 non mass enhancement: focal or linear distribution and heterogeneous internal enhancement most with type I curves. Six of 25 had cancer associated with the complex sclerosing lesion. All six showed non-mass enhancement.
Two cases with invasive breast carcinoma had ADC values under 1.15 x10−3 mm/s while most of the rest had the values above.
Conclusion: Most RS/CSL showed enhancement at MR. The predominant pattern was a non-mass, focal, heterogeneous internal enhancement with type 1 curves. All cases with associated cancer showed non mass enhancement. Invasive breast cancers had ADC values < 1.15 10-3 s/mm2.
Keywords: Radial scar, complex sclerosing lesion, breast cancer, magnetic resonance imaging, elastosis, ADC.
Graphical Abstract
[http://dx.doi.org/10.1016/0720-048X(92)90196-G] [PMID: 1396782]
[http://dx.doi.org/10.1308/003588411X12851639107953] [PMID: 21073820]
[http://dx.doi.org/10.1016/j.anndiagpath.2014.12.003] [PMID: 25578683]
[http://dx.doi.org/10.1056/NEJM199902113400604] [PMID: 9971867]
[http://dx.doi.org/10.1002/cncr.21730] [PMID: 16502407]
[http://dx.doi.org/10.1007/s10549-007-9605-9] [PMID: 18297395]
[http://dx.doi.org/10.1002/cncr.29775] [PMID: 26565738]
[http://dx.doi.org/10.1007/s10549-007-9569-9] [PMID: 17457669]
[http://dx.doi.org/10.1111/j.1075-122X.2005.21530.x] [PMID: 15647074]
[http://dx.doi.org/10.1007/s11547-009-0405-7] [PMID: 19484584]
[http://dx.doi.org/10.1016/j.ejrad.2012.01.038] [PMID: 22386132]
[http://dx.doi.org/10.1186/s12880-018-0279-z] [PMID: 30390667]
[http://dx.doi.org/10.1148/radiol.2532081718] [PMID: 19703869]
[http://dx.doi.org/10.1007/s00330-007-0621-2] [PMID: 17356840]
[http://dx.doi.org/10.2214/AJR.09.3534] [PMID: 20489111]
[http://dx.doi.org/10.2214/AJR.11.7040] [PMID: 22268168]
[http://dx.doi.org/10.1007/s10549-018-5040-3] [PMID: 30460464]
[http://dx.doi.org/10.1111/his.13950] [PMID: 31286532]
[http://dx.doi.org/10.1136/jclinpath-2019-205764] [PMID: 31350292]
[http://dx.doi.org/10.1016/j.crad.2018.04.004] [PMID: 29773220]
[http://dx.doi.org/10.1007/s10549-018-05071-1] [PMID: 30506111]