Presentation
Painless breast lump.
Patient Data
A large, well-circumscribed mass with a thin capsule occupying most of the right breast parenchyma and comprising both fat and soft-tissue internal densities giving a breast within a breast appearance.
Case Discussion
Breast hamartomas most commonly are asymptomatic or present as a painless breast lump. They may also present as unilateral breast enlargement without a palpable mass. Hamartomas represent the benign proliferation of fibrous, glandular, and fatty tissue surrounded by a thin capsule of connective tissue. They contain all components of normal breast tissue which is why there are considered hamartomatous.