Angiolipoma
Painful subcutaneous mass is the classic presentation
Quick Facts
Behaviour
Benign
Category
Soft tissue
Category
Soft tissue
Behaviour
Benign
Gender
Male
Tissue of Origin
Adipose
Epidemiology
- Common benign lipomatous tumour with vascular component
- Seen in young adults, peak 2nd–3rd decades
Clinical Features
- Painful subcutaneous nodule
- Usually smaller than standard lipoma
- Often multiple lesions
- Forearm is classic location
Location
- Forearm
- Upper arm
- Trunk
Imaging
MRI: fat-signal mass with vascular components
Pathology
- Mature adipose tissue with prominent small vessels
- Fibrin thrombi in vessels (pathognomonic)
Genetics
No specific alterations
Treatment
Simple marginal excision for symptomatic lesions
Prognosis
- Excellent - recurrence after complete excision is rare
- No malignant potential
Key Points
- Painful subcutaneous mass is the classic presentation
- Often multiple on forearms in young men
- Fibrin microthrombi are pathognomonic
Workup - Blood Tests
No blood tests required
Workup - Local Imaging
- Plain radiograph
- USS +/- MRI
Workup - Biopsy
Excision biopsy or core needle biopsy if clinical diagnosis uncertain
Workup - Staging
No staging required
Follow-up Summary
Medical disclaimer
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