There is a heterogeneous fibroglandular distribution. There are axillary lymph nodes present bilaterally. Mammogram report, any worries?

Heterogenous. fibroglandular distribution is simply an assessment of breast density, and doesn't imply that there is any abnormality. "Dense" breasts may make the mammo more difficult to interpret, and therefore may decrease the sensitivity for detecting cancer, however. Axillary lymph nodes are commonly present on mammography, and unless they look abnormal, are not a cause for concern.