Fibrolipoma Case Report: Navigating Diagnosis and Successful Surgical Intervention

Background: Fibrolipoma is a rare histological variant of lipoma, composed of mature adipose tissue interspersed with dense fibrous connective tissue. It is usually found in the upper body, and occurrence in the lower limbs, particularly the ankle and shin, is extremely uncommon. We report an atypical case of fibrolipoma in the left ankle and shin, initially misdiagnosed as an arteriovenous malformation (AVM), and successfully managed with complete surgical excision. Case presentation: A 24-year-old male presented with painless swelling over the left ankle and shin since childhood. Clinical examination revealed immobile swelling over the left ankle. Initial ultrasonography and computed tomography imaging suggested AVM, but magnetic resonance angiography ruled out vascular involvement. Surgical excision was performed, and histopathological analysis confirmed the diagnosis of fibrolipoma. Conclusion: Fibrolipoma involving the ankle and shin is extremely rare and may mimic vascular malformations. Early imaging and definitive diagnosis ensure improved outcomes in such rare cases. Surgical intervention and histopathological examination lead to effective treatment with low recurrence risk