Internal mammary lymph nodes as incidental findings at screening breast MRI

Abstract Objective To evaluate the prevalence of internal mammary lymph nodes (IMLNs) on breast magnetic resonance imaging (MRI) in a screening population. Materials and methods We retrospectively reviewed 92 consecutive screening breast MRI exams. Logistic regression was performed to ascertain the...

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Bibliographic Details
Published in:Clinical imaging 2015-09, Vol.39 (5), p.791-793
Main Authors: Ray, Kimberly M, Munir, Reema, Wisner, Dorota J, Azziz, Ania, Holland, Belinda Chang, Kornak, John, Joe, Bonnie N
Format: Article
Language:English
Subjects:
Adult
Age
Aged
Biopsy
Breast
Breast cancer
Breast MRI
Breast Neoplasms - pathology
Breasts
Female
Follow-Up Studies
Humans
Incidental Findings
Internal mammary lymph nodes
Lymph
Lymph Nodes - pathology
Lymphatic Metastasis
Magnetic Resonance Imaging
Middle Aged
NMR
Nuclear magnetic resonance
Patients
Prevalence
Radiology
Regression
Retrospective Studies
Risk
Screening
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Summary:Abstract Objective To evaluate the prevalence of internal mammary lymph nodes (IMLNs) on breast magnetic resonance imaging (MRI) in a screening population. Materials and methods We retrospectively reviewed 92 consecutive screening breast MRI exams. Logistic regression was performed to ascertain the risk of IMLNs in cancer-free subjects and to determine whether the risk varies with age. Results IMLNs were present in 48.9% of patients. Mean node size was 4 mm (range, 3–10 mm). The prevalence of IMLNs was not related to age. No patients developed breast cancer after a mean follow-up of 3 years. Conclusion Subcentimeter IMLNs are common incidental findings at screening breast MRI.
ISSN:0899-7071
1873-4499
DOI:10.1016/j.clinimag.2015.05.011