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Lipoma

Etiology: • Unknown.

Pathogenesis: • Unknown.

Epidemiology: • Among the commonest tumors of adults. • Occur at all ages. • Males and females equally affected.

General Gross Description: • May occur anywhere in the body, most often in the subcutaneous tissues. • Grossly, characterized by lobulated soft yellow mass, surrounded by a thin capsule. • Benign tumors of fat cell (adipocyte) origin.

General Microscopic Description: • Microscopically, composed of adult, mature, histologically normal looking adipocytes.

Clinical Correlations: • Usually present as a painless, soft mass. • The clinical course is benign and complete excision is curative.

References: •Robbins "Pathologic Basis of Disease". (Cotran, Kumar and Robbins, Eds) 5th Edition. pp 1262.