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Dedifferentiated liposarcoma of retroperitoneum: spectrum of imaging findings in 15 patients

Authors
 Sun Hwa Hong  ;  Kyeong Ah Kim  ;  Ok Hee Woo  ;  Cheol Min Park  ;  Chul Hwan Kim  ;  Myeong-Jin Kim  ;  Jae-Joon Chung  ;  Joon Koo Han  ;  Sung Eun Rhae 
Citation
 CLINICAL IMAGING, Vol.34(3) : 203-210, 2010 
Journal Title
 CLINICAL IMAGING 
ISSN
 0899-7071 
Issue Date
2010
MeSH
Adult ; Aged ; Female ; Humans ; Liposarcoma/diagnosis* ; Magnetic Resonance Imaging/methods* ; Male ; Middle Aged ; Reproducibility of Results ; Retroperitoneal Neoplasms/diagnosis* ; Sensitivity and Specificity ; Tomography, X-Ray Computed/methods*
Keywords
Liposarcoma ; Dedifferentiated ; Retroperitoneum ; CT ; MR ; Pathology
Abstract
BACKGROUND: Dedifferentiated liposarcoma is a high-grade nonlipogenic sarcoma that arises in the background of a preexisting well-differentiated liposarcoma. The purpose of this work is to evaluate the spectrum of radiologic appearance of retroperitoneal dedifferentiated liposarcoma with clinicopathologic features. METHODS: Radiologic images and clinical histories of 15 patients with histologically verified retroperitoneal dedifferentiated liposarcoma were retrospectively studied. Patients included 11 men and 4 women, with mean age of 55.8 years (range, 36-74 years), and they underwent computed tomography (CT) (n=15) and magnetic resonance imaging (MRI) (n=5). RESULTS: The mean size of the tumor was 22.6 cm with a range of 9.5-38 cm. Both CT and MRI showed well-circumscribed, large round, or lobulated retroperitoneal mass. The appearance of the tumor was classified as follows: Category I, nonfatty component within predominant fatty mass (n=5); Category II, focal fatty component within large nonfatty mass (n=6); Category III, well-defined fatty mass and well-defined nonfatty mass (n=1); Category IV, two masses with predominantly nonfatty component (n=3). CONCLUSION: Retroperitoneal dedifferentiated liposarcomas present various spectra of imaging findings. While Categories I and III may suggest dedifferentiated liposarcoma, Categories II and IV may appear as other types of liposarcoma or other malignant retroperitoneal tumor.
Full Text
http://www.sciencedirect.com/science/article/pii/S0899707110000331
DOI
10.1016/j.clinimag.2009.12.025
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myeong Jin(김명진) ORCID logo https://orcid.org/0000-0001-7949-5402
Chung, Jae Joon(정재준) ORCID logo https://orcid.org/0000-0002-7447-1193
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/101896
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