[Harmatoma of the breast--case report].

Objective: To describe rare hamartoma of the breast in a 31-year-old female.
Design: Case report.
Settings: Department of Special Diagnostics SPAU, Charles University Hospital Pilsen.
Subject and Method: A 31-year-old female was examined for breast asymmetry. A huge tumor was revealed in right mammary gland using ultrasonography. Encapsulated tumor 10x10x10 cm was removed. Subsequent histological examination revealed breast hamartoma. The patient is alive and well without signs of disease one year after excision.
Conclusion: Hamartoma of the breast is a rare benign tumor. Diagnostics is very complicated and it is almost impossible to establish correct diagnosis preoperatively. A simple excision is a sufficient treatment with good curative effect.