Giant anterior chest wall lipoma: report of a case and review of literature

Abstract

Introduction: Lipomas are the most common benign soft tissue tumors composed of mature adipocytes. While typically small and asymptomatic, giant lipomas are rare and can pose diagnostic and therapeutic challenges. We present a case of a giant lipoma causing significant functional impairment and cosmetic deformity.

Methods: A 54-year-old male presented with a progressively enlarging, painless mass on the posterior neck and upper back over a 5-year period. Clinical evaluation and imaging studies, including ultrasonography and contrast-enhanced MRI, revealed a well-encapsulated, homogenous fatty mass measuring 28 × 24 × 20 cm. The lesion exhibited no signs of invasion into adjacent structures. A wide local excision was performed under general anesthesia.

Results: The excised mass weighed 4.0 kg and was histologically confirmed as benign lipoma with no evidence of atypia or liposarcomatous changes. Postoperative recovery was uneventful, and the patient reported significant improvement in mobility and self-esteem at one year follow-up. No recurrence was observed.

Conclusion: Giant lipomas, although benign, may mimic malignant tumors due to their size and deep location. Early diagnosis and surgical excision are crucial for symptom relief and to exclude malignancy. Imaging is valuable in preoperative planning, while complete excision ensures definitive treatment with low recurrence risk. This case highlights the importance of timely intervention in managing unusually large soft tissue tumors.