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ObjectivesTo evaluate breast findings incidentally detected on body MRI.MethodsA retrospective review of the institutional database identified 1752 body MRI performed between January 2015 and September 2015. MRI of women with breast tissue visible in the field-of-view were reviewed for breast findings. Breast findings were classified with the breast imaging reporting and data system (BI-RADS) lexicon. The standard statistic, costs of additional work-up, and the clinical relevance were used to describe breast findings, and we calculated 95 % exact confidence intervals (CIs).Results440 body MRI of 440 women (mean age: 57 ± 20 years) included breast tissue in the field-of-view. A total of 41 breast findings were identified in 41 patients. Breast findings were classified BI-RADS 2 N = 25, BI-RADS 3 N = 13, BI-RADS 4 N = 3. A total of 3.6 % [95 % CI 1.6 %, 5.6 %] women with breast tissue visible on MRI had a recommendation for further imaging work-up for a breast finding. The 18.7 % (3 of 16) of these patients had a clinically important finding (breast cancer). Further imaging evaluation increased costs of €108.3 per patient with a breast finding.ConclusionsClinically important breast findings could be detected on body MRI in up to 0.7 % (3 of 440) of women.

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SummaryA lung cyst is defined as a round parenchymal lucency or area of low attenuation with a thin wall. Although lymphangioleiomyomatosis (LAM) and Langerhans cell histiocytosis (LCH) are the most frequently encountered causes, the differential diagnosis for diseases characterised by diffuse lung cysts is broad ranging from isolated chest disorders to rare multisystem diseases. This article will illustrate and describe the spectrum of diseases associated with air cysts at high-resolution CT (HRCT), highlighting disorders in which the HRCT findings can be diagnostic.