Mayumi Takeuchi1, Kenji Matsuzaki2, and Masafumi Harada1
1Department of Radiology, Tokushima University, Tokushima, Japan, 2Department of Radiological Technology, Tokushima Bunri University, Sanuki, Japan
1Department of Radiology, Tokushima University, Tokushima, Japan, 2Department of Radiological Technology, Tokushima Bunri University, Sanuki, Japan
LEGH-associated adenocarcinoma (LEGH-AC) may contain solid components with diffusion restriction (DR). LEGH is undifferentiable from LEGH-AC without DR, and gradual contrast-enhancement pattern on DCE-MRI may be suggestive for its benignity.
LEGH-AC: Multicystic mass with solid components exhibiting sponge-like slight high intensity on T2WI, high intensity on DWI with relatively low ADC (1.54 x 10-3mm2/s), maintained high signal intensity on computed DWI (b=1500s/mm2) suggesting diffusion restriction, and rapid & prolonged contrast-enhancement pattern on DCE-MRI.
LEGH: Multicystic mass with solid components exhibiting sponge-like slight high intensity on T2WI, high intensity on DWI with relatively high ADC (2.29 x 10-3mm2/s), decreased signal intensity on computed DWI (b=1500s/mm2) suggesting T2 shine-through effect, and gradual contrast-enhancement pattern on DCE-MRI.
