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[Primary liposarcoma of the stomach wall--a rare mesenchymal tumor]
B Philipps1, M Lörken, E Manegold
1Chirurgische Universitätsklinik und Poliklinik, RWTH Aachen.
Introduction:
Primary liposarcoma of the stomach wall is rare. Only eight cases have been described so far.
Material And Method:
Here we report the ninth case, occurring in a 74-year-old woman who presented with weight loss and a therapy-resistant ulcer of the stomach wall.
Results:
Pre- and perioperative findings suggested a benign lipoma of the stomach wall. The patient was treated with subtotal gastrectomy. On microscopic examination the tumor showed features of a benign lipoma but for a distinctive capillary net. Immunohistochemically the S-100 reaction was positive. Less than 1% of Ki67-positive cells could be found, thus suggesting a highly differentiated primary liposarcoma of the stomach wall.
Conclusion:
In situations where the benign or malignant nature of a submucosal lesion cannot be diagnosed with certainty a mesenchymal tumor of the stomach wall has to be included in the differential diagnosis. Here the indication for complete surgical excision and histological workup has to be set widely.