elastofibroma

Epidemiology

• almost exclusively over age 50
• peak between 7th and 8th decades
• female predominance
• almost always located in connective tissue between lower scapula and chest wall, deep to latissimus dorsi and rhomboid major muscles, often attached to periosteum of ribs
• unilateral in most cases

Pathology

• ill-defined
• size varies from 2 - 15 cm in diameter

Microscopic pathology

• paucicellular collagenous tissue
• large numbers of elastic fibers
• small amounts of mucoid stroma
• entrapped mature fat cells

Immunophenotype

elastin +

Clinical manifestations

• slowly growing mass
• rarely pain or tenderness

Management

excision; local recurrence rare

More general terms

• benign fibroblastic/myofibroblastic neoplasm