• Med Princ Pract · Jan 2020

    Low Recurrence Rate and Risk of Distant Metastases following Marginal Surgery of Intramuscular Lipoma and Atypical Lipomatous Tumors of the Extremities and Trunk Wall.

    • Benjamin Presman, Sune Frederik Jauffred, Maj Raundrup Kornø, and Michael Mørk Petersen.
    • Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
    • Med Princ Pract. 2020 Jan 1; 29 (3): 203-210.

    ObjectiveThe purpose of the present study was to determine the local recurrence rate, risk of dedifferentiation, and distant metastasis after surgical excision of intramuscular lipomas (IML) and atypical lipomatous tumors (ALT).Subjects And MethodsWe retrospectively assessed all IML and ALT surgically removed from the extremities or trunk wall in our clinic between 1997 and 2006. Data from 141 patients with IML and 35 patients with ALT were extracted from the National Pathology Registry and patient files.ResultsIML and ALT recurred in 10 and 6 tumors, respectively. No metastases were observed in either group. The 5- and 10-year local recurrence-free survival rates were 97.1% (94.3-99.9) and 94.8% (CI: 91.1-98.6) for IML and 84.6% (CI: 72.1-97.1) and 81.1% (CI: 67.6-94.8) for ALT, respectively. ALT were found to dedifferentiate in 2/35 cases.ConclusionBoth IML and ALT showed a low recurrence rate when removed surgically from the extremities or trunk wall with intended marginal resection. No distant metastases were observed in any of the groups. It, therefore, seems safe to treat these tumors with marginal resection.© 2019 The Author(s) Published by S. Karger AG, Basel.

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