8861/0 Angiolipoma, NOS


Definitions

Tumours of the central nervous system
ICD-O-3 topography code: C70, C71 and C72

Angiolipoma is a lipoma with prominent vascularity. The vascular tissue is more abundant at the periphery of the tumour and contains fibrin thrombi.



Connective, subcutaneous and other soft tissues
ICD-O-3 topography code: C49

Angiolipoma is a lipoma with prominent vascularity. The vascular tissue is more abundant at the periphery of the tumour and contains fibrin thrombi.

Angiolipoma in soft tissue most commonly affects the forearm, followed by the trunk and upper arm. It presents as an encapsulated, subcutaneous nodule consisting of mature adipocytes intermingled with small, thin-walled, branching vessels. The lesions are usually <2cm in diameter 1
 
Fletcher CDM, Unni KK, Mertens F (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
3rd Edition
IARC Press: Lyon 2002



.
Angiolipomas most commonly appear in the late teens or early twenties. Males are more frequently affected. In 5% of cases, there is an increased familial incidence
2
Click to access Pubmed
Cina SJ, Radentz SS, Smialek JE (1999)
A case of familial angiolipomatosis with Lisch nodules.
Arch Pathol Lab Med 123: 946-8



3
Click to access Pubmed
Kanter WR, Wolfort FG (1988)
Multiple familial angiolipomatosis: treatment of liposuction.
Ann Plast Surg 20: 277-9



. Angiolipomas are benign tumours and show no tendency to recur 4
 
Fletcher CDM, Unni KK, Mertens F (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
3rd Edition
IARC Press: Lyon 2002



.



Breast
ICD-O-3 topography code: C50

See Lipoma for discussion on conventional lipomas and variants.