Akio Tsukabe MD, Presenter: Nothing to Disclose

Hisashi Tanaka MD, Abstract Co-Author: Nothing to Disclose

Yoshiyuki Watanabe MD, PhD, Abstract Co-Author: Nothing to Disclose

Hiroto Takahashi, Abstract Co-Author: Nothing to Disclose

Yuki Kunitomi MD, Abstract Co-Author: Nothing to Disclose

Atsuko Arisawa, Abstract Co-Author: Nothing to Disclose

Chisato Matsuo, Abstract Co-Author: Nothing to Disclose

Yumiko Hori, Abstract Co-Author: Nothing to Disclose

Norifumi Naka, Abstract Co-Author: Nothing to Disclose

Noriyuki Tomiyama MD, PhD, Abstract Co-Author: Nothing to Disclose

1, To recognize the diversity of imaging features of an atypical lipomatous tumor / well-differentiated liposarcoma (ALT/WDLS) reflecting its morphological variation 2, To know the differential diagnosis and recognize the difficulty in diagnosing ALT/WDLS ALT/WDLS is subdivided into three main subtypes; adipocytic (lipoma-like), sclerosing, and inflammatory. The presence of more than one pattern in the same lesion is common. Moreover, some have the component like enchondroma or osteosarcoma without dedifferentiation. In the literatures, the lipoma-like subtype is so emphasized that little mentioned to another types. We should know the diversity in radiological features of ALT/WDLS to diagnose and treat it precisely.  

1, Definition and pathological features of ALT/WDLS 2, Typical and atypical imaging features of ALT/WDLS corresponding to pathological features 3, Mimics of ALT/WDLS including benign or malignant adipocyic tumors, other tumors with fat and tumor-like lesions (i.e. dedifferentiated liposarcoma, myxoid liposarcoma, spindle cell lipoma, hibernoma, lipomatosis of nerve, lipoma with necrosis or hemorrhage, lipomatous hemangiopericytoma, ectopic hamaromatous thymoma, retroperitoneal angiomyolipoma, adrenal or retroperitoneal myelolipoma, lipoleiomyoma, elastofibroma, superior lumber hernia etc)

http://abstract.rsna.org/uploads/2014/14005771/14005771_bsfa.pdf

Tsukabe, A, Tanaka, H, Watanabe, Y, Takahashi, H, Kunitomi, Y, Arisawa, A, Matsuo, C, Hori, Y, Naka, N, Tomiyama, N, Diversity of Atypical Lipomatous Tumor/Well-Differentiated Liposarcoma (ALT/WDLS).  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14005771.html