| Study (year) | Purpose | Sensitivity (%) | Specificity (%) |
| Muñoz Carrasco et al. (2013) [42] | Evaluation of mammography and ultrasound regarding men with nipple discharge | 100 | 100 |
| Taylor et al. (2013) [67] | Evaluation of mammography and ultrasound and clinical examination in order to establish new proposals for age-specific guidelines for imaging of the male breast | 92 | 90 |
| Patterson et al. (2006) [66] | Evaluation of mammography and ultrasound in the diagnosis of benign and malignant breast problems | 100 | 90 |
| Adibeli et al. (2009) [45] | Evaluate the diagnostic validity of mammography and ultrasound regarding male breast diseases and provide a diagnostic record | 69 | 87 |
| Stewart et al. (1997) [63] | Evaluation of radiological imaging regarding the male breast | 92 | 90 |
| Evans et al. (2001) [50] | Evaluation of the validity of mammography regarding male breast diseases | 92 | 90 |