Management of Familial Multiple Lipomatosis

Diagnostic Approach

• The British Journal of Cancer recommends MRI with expert review when there is diagnostic uncertainty, as it can differentiate between benign lipomas and atypical lipomatous tumors (ALT) in up to 69% of cases 1, 2
• Initial evaluation should include ultrasound as an effective triage tool to confirm lipomatous nature of the masses, particularly in patients with multiple similar growths 3

Treatment Algorithm

Surgical Management

• Complete en bloc surgical excision is the standard treatment for symptomatic lipomas in FML, providing excellent rates of long-term local control 1, 2
• The British Journal of Cancer suggests that marginal resections as complete en bloc specimens provide excellent rates of long-term local control 1

Special Considerations

Red Flags Requiring Further Investigation

• Rapid increase in size, pain, or concerning features on imaging may suggest malignant transformation and require urgent referral 3
• MDM-2 amplification testing by fluorescence in-situ hybridization should be performed if there is suspicion of atypical lipomatous tumor 1, 2

Post-Treatment Follow-up

• Following surgical excision and post-operative wound care, patients can be discharged to primary care 1, 2
• Re-referral is only necessary if there is clinical suspicion of recurrence 2