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Lipoma of bone - Foot and Ankle

Summary

Lipoma and its variants comprise a relatively uncommon tumor in the foot, despite being one of the most common soft tissue tumors in other areas of the body.

Most occur in adults between 40 and 60 years when fat begins to accumulate.
About 5 to 8% of cases present with multiple lipomas.
On MRI scans, the signal characteristics of lipoma are identical to those of nearby normal fat in all sequences.
Treatment is by simple excision.
Complete Information on this Tumor
Introduction and Definition: 

Lipoma and its variants comprise a relatively uncommon tumor in the foot, despite being one of the most common soft tissue tumors in other areas of the body. Angiolipoma is a variant of lipoma that occurs in young adults as a subcutaneous nodule. The tumors are tender to the touch and rarely grow larger than 2 cm. Multiple angiolipomas are found in two-thirds of patients with angiolipoma.

Incidence and Demographics: 
Most occur in adults between 40 and 60 years when fat begins to accumulate. They are more common in men and more common in obese individuals.
Symptoms and Presentation: 

About 5 to 8% of cases present with multiple lipomas.

X-Ray Appearance and Advanced Imaging Findings: 
On MRI scans, the signal characteristics of lipoma are identical to those of nearby normal fat in all sequences.
Treatment Options for this Tumor: 
Treatment is by simple excision.
Outcomes of Treatment and Prognosis: 
Recurrence is rare and malignant transformation has not been reported.
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