Septum in fibroglandular predominance. A 19-year-old female with huge breasts; fibroglandular predominance with multiple well defined soft tissue mass lesions (fibroadenomata). On the right side the inferior septum (red arrows) is remarkably thickened with a posterior width of 23 mm accommodating fat, thinning out anteriorly reaching a thickness of 8 mm, deviated medially by one of the fibroadenomata. In left breast, septum is extremely difficult to verify attributed to the accentuated fibroglandular tissue and multiple deep lesions resting on the pectoral fascia. T2W, T2 weighted.