Concurrent invasive ductal carcinoma and ductal carcinoma in situ arising inside and outside a breast hamartoma: A case report

Figure 1 Mammography. A: Mammography revealed a circumscribed mass including fat and glands with suspicious local architectural distortion; B: Ultrasonography revealed a heterogeneous tumor with a smooth capsule (hamartoma; thin arrow) and an irregular, hypoechoictumor with posterior decrescence and an indistinct boundary (invasion; thick arrows); C: Computed tomography revealed a well-defined elliptical mass with uneven density; D: Magnetic resonance imaging showing the circumscribed mammary hamartomaswith dense fibroglandular tissue and fat (hamartoma; thin arrow). Note the marked irregular enhancement region with type 2 enhancement curves within hamartoma( thick arrows) , and the concerning area of architectural distortion with type 2 enhancement curves at the lower margin of the hamartoma (white dot arrows).