TY - JOUR
T1 - Retroperitoneal well-differentiated inflammatory liposarcoma
T2 - A diagnostic dilemma
AU - Kawano, Rinsaku
AU - Nishie, Akihiro
AU - Yoshimitsu, Kengo
AU - Irie, Hiroyuki
AU - Tajima, Tsuyoshi
AU - Hirakawa, Masakazu
AU - Ishigami, Kousei
AU - Ushijima, Yasuhiro
AU - Okamoto, Daisuke
AU - Yabuuchi, Hidetake
AU - Taketomi, Akinobu
AU - Nishihara, Yunosuke
AU - Fujita, Nobuhiro
AU - Honda, Hiroshi
PY - 2008/8
Y1 - 2008/8
N2 - We present a case of retroperitoneal well-differentiated inflammatory liposarcoma that was extremely difficult to diagnose preoperatively. Computed tomography and magnetic resonance images showed a 5-cm homogeneous soft-tissue mass with a decreased apparent diffusion coefficient and without fat component in the retroperitoneum. Minimal fat stranding was detected around the mass. The preoperative working diagnosis was malignant lymphoma or inflammatory pseudotumor, whereas the final diagnosis after surgery was well-differentiated inflammatory liposarcoma. As a result, only a large component of lymphoid infiltration was recognized as a tumor preoperatively, and minimal fat stranding represented a component of lipoma-like liposarcoma. In this entity, a lipomatous component could easily be missed on radiologic imaging because of the conspicuity of lymphoid infiltration. We should consider the possibility of this variant when we evaluate a retroperitoneal tumor.
AB - We present a case of retroperitoneal well-differentiated inflammatory liposarcoma that was extremely difficult to diagnose preoperatively. Computed tomography and magnetic resonance images showed a 5-cm homogeneous soft-tissue mass with a decreased apparent diffusion coefficient and without fat component in the retroperitoneum. Minimal fat stranding was detected around the mass. The preoperative working diagnosis was malignant lymphoma or inflammatory pseudotumor, whereas the final diagnosis after surgery was well-differentiated inflammatory liposarcoma. As a result, only a large component of lymphoid infiltration was recognized as a tumor preoperatively, and minimal fat stranding represented a component of lipoma-like liposarcoma. In this entity, a lipomatous component could easily be missed on radiologic imaging because of the conspicuity of lymphoid infiltration. We should consider the possibility of this variant when we evaluate a retroperitoneal tumor.
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U2 - 10.1007/s11604-008-0255-6
DO - 10.1007/s11604-008-0255-6
M3 - Article
C2 - 18770006
AN - SCOPUS:51349096019
SN - 0288-2043
VL - 26
SP - 450
EP - 453
JO - Radiation Medicine - Medical Imaging and Radiation Oncology
JF - Radiation Medicine - Medical Imaging and Radiation Oncology
IS - 7
ER -