Anastomosing Haemangioma
Benign deep soft tissue or viscerally located benign vascular neoplasm, often discovered incidentally
Quick Facts
Behaviour
Benign
Category
Soft tissue
Category
Soft tissue
Behaviour
Benign
Gender
Male
Tissue of Origin
Vascular
Epidemiology
Wide age range with peak incidence in older adults
Clinical Features
- Deep soft tissue or viscerally located benign vascular neoplasm
- Frequently, incidental finding and asymptomatic
- May present with mass effect, pain, pleural effusion or haematuria
- Has association with end stage renal disease
Location
Predilection for genitourinary tract and paravertebral soft tissues
Imaging
- CT: avid contrast enhancement
- USS: hypoechoic mass with minimal blood flow
- MRI: avidly enhancing 'flower petal' appearance on T2
Pathology
Well circumscribed vascular proliferation/anastomosing vessels
Genetics
Mutations in GNA genes
Treatment
- Surgical excision is curative
- Surgery often performed to confirm diagnosis and exclude malignancy (angiosarcoma or RCC)
Prognosis
Excellent prognosis, even in infiltrative or multifocal lesions
Key Points
- Benign deep soft tissue or viscerally located benign vascular neoplasm, often discovered incidentally
- Unclear aetiology may appear in context of chronic kidney disease and renal cell carcinoma
- Mimics well differentiated angiosarcoma radiologically and histologically
Workup - Blood Tests
FBC, U&E, LFTs - baseline
Workup - Local Imaging
CT or MRI with contrast of primary site
Workup - Biopsy
Core needle biopsy
Workup - Staging
No staging required
Follow-up Summary
Medical disclaimer
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