Colon and rectum
Lipoma is the most common soft tissue tumour and composed of mature white adipocytes
Fletcher CDM, Unni KK, Mertens F (Eds.)
. It typically manifests in adults and surgical resection is usually curative.
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
IARC Press: Lyon 2002
Lipoma of the colon and rectum
Submucosal lipomas occur especially in the colon, usually detected in older adults as an incidental finding. Larger tumours may cause obstruction, ulcerate and undergo necrosis resulting in gastrointestinal haemorrage. Histologically, there is mature adipose tissue without significant atypia. Thick-walled dilated blood vessels are often present in these lipomas, although they differ from peripheral angiolipomas
Bosman FT, Carneiro F, Hruban RH, Theise ND (Eds.)
WHO Classification of Tumours of the Digestive System.
International Agency for Research on Cancer: Lyon 2010