Fig. 1
From: Retroperitoneal fibrous tumor recurring as lung metastases after 10 years: a case report
CT and MRI imaging before treatment of primary tumor. a Abdominal CT shows a solid encapsulated mass with nonuniform internal structure approximately 16 × 16 × 10 cm, compressing the right kidney and duodenum to the caudal side; b contrast-enhanced CT coronary cut; c MRI shows association-clear, T1-weighted tumors with predominantly low to equal signals; d T2-weighted image showed a high signal intensity tumor with low signal intensity area inside