Clinical outcomes of deep atypical lipomas (well-differentiated lipoma-like liposarcomas) of the extremities |
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Authors: | Sommerville Scott M M Patton James T Luscombe Jon C Mangham D Chas Grimer Robert J |
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Affiliation: | Consultant Orthopaedic Surgeon, The Wesley Hospital, Brisbane, Australia. |
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Abstract: | AIM: Controversy exists with regard to the nomenclature, treatment and outcome of a group of well-differentiated lipomatous tumours sometimes labelled as atypical lipomas. The purpose of the present paper is to attempt to clarify these controversies by reporting our experience with this lesion. METHODS: The clinical features and follow up of 61 patients with the diagnosis of deep atypical lipoma and a minimum two-year follow up were examined. RESULTS: All patients were treated by marginal excision alone. A local recurrence was seen in five patients (8%). Three recurred once and two recurred twice. No patient had a metastasis or died as a result of the tumour. No lesion dedifferentiated. CONCLUSION: We believe the term atypical lipoma is appropriate for these tumours, as they appear not to have any metastatic potential, merely a propensity to recur locally. The chance of dedifferentiation is small and radiotherapy may play a role in its causation. We suggest that a simple marginal resection (shelling-out) is adequate treatment for these lesions. Radiotherapy should not be used. |
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Keywords: | atypical lipoma dedifferentiation intramuscular liposarcoma soft tissue sarcoma |
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