Korean J Radiol.  2010 Dec;11(6):683-686. 10.3348/kjr.2010.11.6.683.

A Rare Case of Recurrent Myoid Hamartoma Mimicking Malignancy: Imaging Appearances

• Ko MS
• Jung WS
• Cha ES
• Choi HJ

• KMID: 1119232
• DOI: http://doi.org/10.3348/kjr.2010.11.6.683

Abstract

Myoid hamartoma is an uncommon type of breast hamartoma and its recurrence is very rare. We report the imaging appearance of an unusual case of recurrent myoid hamartoma of the breast mimicking malignancy in a 43-year-old woman. Although the mammographic and ultrasonographic findings have long been described in the literature, MR finding with a dynamic study has not, to the best of our knowledge, been reported previously.

Keyword

Breast; Myoid hamartoma; Hamartoma, MR

MeSH Terms

Adult
Biopsy, Needle
Breast Neoplasms/*pathology/surgery
Diagnosis, Differential
Female
Fibroadenoma/*pathology
Hamartoma/*pathology/surgery
Humans
Immunohistochemistry
Magnetic Resonance Imaging/*methods
Neoplasm Recurrence, Local/pathology

Figure

• 

  Fig. 1 43-year-old female patient. A. Medio-lateral oblique view of left breast shows two oval isodense masses (arrows and arrowheads) with partially obscured margin (arrows) in left subareolar area. B, C. Ultrasound images show 2.3-cm sized irregular isoechoic mass (white arrowheads) with microlobulated margin located between surgical scars (arrows) and overlying skin scar (black star B), and another, 2.0-cm sized oval hypoechoic mass with circumscribed margin located in lower outer quadrant of left breast (C). D. Contrast-enhanced sagittal subtracted MR image reveals rapidly enhancing mass. E. Graph of MRI time-signal intensity curves from MR image shows rapid enhancement on first postcontrast time point and significant drop in signal on subsequent time points. F. Contrast-enhanced sagittal subtracted MR image reveals progressive enhancement of mass. G. Graph of MRI time-signal intensity curves from MR image shows gradual enhancement on first postcontrast time point and continuous increase in signal on subsequent time points. H. Photomicrograph shows smooth muscle fibers without atypia (Hematoxylin & Eosin stain, ×100).

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