Well-Differentiated Liposarcoma Disguised as a Recurrent Lipoma of the Forearm Flexor Compartment: A Case Report

Abstract Introduction Lipomas are common benign mesenchymal tumor that arise from the adipose tissue. Differential diagnosis between the benign and malignant form (liposarcoma) must be made to prevent complication and recurrence. Presentation of case We reported a 63-year-old man who presented with recurrent large-sized mass on the right forearm with the first presentation approximately 28 years before being treated in our center. Main complaints were discomfort, social embracement, and difficulty in dressing. There were no compression symptoms observed. We performed marginal excision and sent the sample for histopathological examination. The work has been reported in line with the Surgical Case Report (SCARE) criteria. Discussion During one year of post-operative period, no recurrence was detected and a complete relief of symptoms was as expected. Conclusion Diagnostic challenge in such a large-sized (giant) lipoma is in differentiating it with the malignant form. Surgical excision is the choice of treatment. However, long-term follow up is needed due to the risk of recurrence.