Incidentally detected breast lesions on computerized tomography

Introduction: Despite the fact that mammography is the main imaging method, incidental benign and malignant breast lesions are increasingly detected in thorax computerized tomography (CT) to detect different pathologic findings. For this reason, it is important that these lesions are identified and correctly identified. In this study, we aimed to evaluate morphologic features of breast lesions in CT scans for the detection of non-mammary pathologies. Materials and Methods: Between 2010 and 2018, 20 malignant and 12 benign lesions with histopathologic diagnosis and thoracic CT scans were searched in the pathology department database of our hospital. Eight patients with benign grouped ultrasonography or mammography with at least 2 years follow-up stabl lesion and thorax CT were included. Thirty patients with 20 malignant and 20 benign lesions on CT were retrospectively reviewed. Morphologic features of breast lesions, contrast pattern and pathological LAP were evaluated. Discussion: 19 (95%) of 20 malignant lesions and 19 (95%) of 20 benign lesions were detected in thorax CT. 18 of malignant lesions were irregular and 1 of them was oval. The mass contour was irregular in 10, spicule in 8, and smooth in 1. 13 of benign lesions were oval, 4 were round, 2 were irregular. Mass contour was sharp in 14, irregular in 4, and spicule in 1. Massive enhancement was present in all malignant lesions and in 6 (31.6%) benign lesions. Malignant lymphadenopathy (LAP) was diagnosed in 5 patients (26.3%). Patients with benign diagnoses were not associated with pathologic LAP. Conclusion: The features of MDCT can help to differentiate benign lesions from malignancies. The incidence of incidental enhancement breast lesion in thorax CT is irregular contour and shape, accompanied by pathologic LAP malignancy, smooth contour and shape, absence of mass contrast enhancement should suggest benignity