Lipoma of Colon

• Lipomas are second in prevalence to adenomas

• Usually asymptomatic

• When symptomatic:

• Pain

• Diarrhea

• Rectal bleeding

• Constipation

• Most are submucosal

• Most are located on the right side (40%), but about 20% are in the sigmoid

• Smooth, sharply defined hemispheric mass

• Squeeze-sign=deformity on post evacuation film

• Ulceration is rare

• Contour may be altered by peristalsis

• May intussuscept

• CT may demonstrate fatty nature of lesion

WH/93