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Dürr, Hans Roland; Müller, Annika and Klein, Alexander (2020): Weichteiltumorresektionen. Fallstricke, typische Komplikationen und Vermeidungsstrategien. In: Orthopäde, Vol. 49, No. 2: pp. 98-103

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Benign soft tissue lesions are 300 times as common as soft tissue sarcomas;hence, the likelihood of confusion is high. Lesions that are larger than 5202f;cm, deep, show infiltrative growth, or recur despite benign histology are suspicious for soft tissue sarcoma. The biopsy incision must be carefully chosen;in large lipomas, atypical lipomatous tumor should be considered in the differential diagnosis. Lymphomas can be misdiagnosed and treated as undifferentiated soft tissue sarcoma. Vascular tumors and epithelioid lesions require more attention in histopathologic diagnostics and staging. Inflammatory lesions and aggressive fibromatosis (desmoid tumor) should also be borne in mind. In general, staging should be adapted to the underlying tumor biology. Neoadjuvant and adjuvant multimodal therapy must be discussed with the patient and used in a targeted manner. Superficial infiltrating sarcomas are prone to intralesional resection and may require intraoperative frozen section histology. If plastic reconstruction is necessary, a two-step procedure after proven tumor-free margins can be beneficial. Cavities and seromas, tight sutures, and closing the wound with clips are particularly critical. Wound drains at the thigh, pelvis, and groin should be left longer. Early revision in cases of hematoma or critical wound healing have proven beneficial. Adjuvant therapies are best planned before discharge from hospital. Overall, tumor-specific follow-up can significantly reduce the disadvantages of a recurrence resection.

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