Table 1.
Indications of CT Scans which Detect Incidental Breast Lesions in 97 Patients.
NSCLC non-small cell lung cancer, COPD chronic obstructive pulmonary disease.
Fig 1.
A 27-year-old female underwent chest CT for chronic cough.
Coronal nonenhanced (a) and contrast-enhanced (b) CT scans showed an ovoid, well-defined fibroadenoma (arrow, 41 HU in nonenhanced CT and 47 HU in contrast-enhanced CT,ΔHU = 3) in right breast and multifocal nonmass enhancement (arrowheads, 39 HU in nonenhanced CT and 119 HU in contrast-enhanced CT, ΔHU = 77) in left breast. Histopathlogy revealed diagnosis of invasive ductal carcinoma.
Table 2.
Diagnosis of the 102 Incidental Breast Lesions.
Table 3.
Rates of Benign and Malignant Lesions for 102 incidental Breast Lesions by Patient and CT Imaging Parameters.
Note.—Unless otherwise indicated, data are numbers of lesions, with percentages in parentheses.
Fig 2.
A 58-year-old female underwent chest CT for left pleural effusion.
Axial nonenhanced (a) and contrast-enhanced (b) CT scans showed an irregular enhancing lesion (arrow, 35 HU in nonenhanced CT and 79 HU in contrast-enhanced CT, ΔHU = 40) with indistinct margin in left breast. Histopathlogy revealed diagnosis of invasive ductal carcinoma. Fluid cytology of the pleural effusion was proven to be malignant.
Table 4.
CT Cutoff Values for Differentiating Benign and Malignant Incidental Breast Lesions with Receiver Operating Characteristic (ROC) Curve Analysis.
Note.—Numbers in parentheses are raw data; numbers in brackets are 95% confidence intervals. Percentages were rounded. CIs confidence intervals, AUC area under the receiver operating characteristic curve, HU Hounsfield units.
Table 5.
Risk Factors Associated with Malignancy: Univariate and Multivariate Results.
Note.—Numbers in parentheses are number of malignant lesions out of total number of lesions.
Table 6.
Diagnostic Performance in the Differentiation of Malignant from Benign Incidental Breast Lesions.
Note.—Numbers in parentheses are raw data. Percentages were rounded.
Fig 3.
A 70-year-old female underwent chest CT for health examination.
Axial nonenhanced (a) and contrast-enhanced (b) CT scans showed tiny calcifications (arrow) in left breast. The area adjacent to the calcifications showed enhancement (arrowheads, 82 HU in nonenhanced CT and 116 HU in contrast-enhanced CT, ΔHU = 34). Histopathlogy revealed diagnosis of ductal carcinoma in situ.