Case 345: Metastasis - Cholangiocarcinoma
32 year old man with right upper quadrant pain and abnormal LFT's.
US: Target appearance
Ultrasound shows a classic target sign appearance of this metastasis with a large cystic/necrotic central component. Note perifocal edema, which is typical for metastases, but not well seen on the CT and MR of this patient. Color Doppler demonstrates mild peri-lesional flow.