Resection of liposarcoma of the greater omentum: A case report and literature review

Figures

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  Fig. 1. Abdominal CT showed an 8 × 8 × 4 cm mass (arrowhead) on the cranial side of the bladder in the abdomen.

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  Fig. 2. (a) T2-weighted MRI showed a large, well-defined, low-signal mass measuring 20 × 17 × 7 cm (arrowhead) in the abdomen. (b) The mass was adjacent to another abnormal region measuring 6 × 6 × 5 cm with septae and a capsule (arrow).

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  Fig. 3. (a) A huge yellowish, soft mass with a dark reddish-gray region adjacent to the mass was located under the abdominal wall. (b) The feeder vessel originated from the omental artery.

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  Fig. 4. (a) The resected specimen, including the yellowish mass (yellow arrowhead) and reddish-gray region (red arrowhead), weighed 3750 g and measured 27 × 20 × 10 cm. (b) The cut surface of the tumor was shown. The diagnosis was a well-differentiated liposarcoma in the areas of black arrow and black arrowhead, and a lipoma in the area of white arrow.

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  Fig. 5. (a) Neoplastic spindle cells with atypical nuclei containing condensed chromosomes were present in the septae in the reddish-gray region (black arrowhead in Fig. 4b). (b) Malignant cells were also seen in the area near the reddish-gray region in the yellowish mass (black arrow in Fig. 4b). (c) The area far from the reddish-gray region in the yellowish mass (white arrow in Fig. 4b) was composed of mature adipocytes with uniform nuclei resembling normal fat tissue.