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Japanese Journal of Clinical Oncology 2006 36(8):532; doi:10.1093/jjco/hyl090
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© 2006 Foundation for Promotion of Cancer Research

Image of the Month

A Case of Huge Liposarcoma in the Abdomen

Minoru Esaki and Yoshihiro Moriya

Hepatobiliary and Pancreatic Surgery division, Colorectal Surgery Division, National Cancer Center Hospital, Tokyo, Japan

A 42-year-old man, with a chief complaint of weight loss, was referred to our institution for the treatment of an abdominal tumor. Contrast computed tomogram and magnetic resonance imaging revealed a large retroperitoneal fatty tissue mass having small separates lobules. The voluminous encapsulated mass (29 x 17 x 12 cm), displacing the duodenum and the right hemi-colon to the left, was diagnosed as a liposarcoma (Fig. 1). The dedifferentiated component of the tumor was adjacent to the duodenum, ascending colon, right kidney, inferior vena cava, abdominal aorta and superior mesenteric artery (Fig. 2), which suggested possible invasion to these vital organs.


Figure 1
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  		Figure 1.
 

Figure 2
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  		Figure 2.
 
He underwent a complete excision of the tumor with concomitant resection of the right kidney and the right hemi-colon. The tumor did not involve the major vessels or the duodenum. Histological examination of the specimen revealed retroperitoneal mixed type liposarcoma with various differentiations (well differentiated, dedifferentiated, myxoid, leiomyosarcoma-like and so on). His postoperative course was uneventful. Any adjuvant therapy is not scheduled because of its little efficacy.


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This Article
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