J Korean Soc Radiol.  2017 Mar;76(3):206-210. 10.3348/jksr.2017.76.3.206.

Giant Epidermal Inclusion Cyst in the Male Breast: A Case Report

• Kim HJ
• Park WJ
• Kim SW
• Paik SY

• KMID: 2371687
• DOI: http://doi.org/10.3348/jksr.2017.76.3.206

Abstract

Giant epidermal inclusion cyst is a rare disease entity, and the occurrence of this cyst in the male breast is extremely rare. We report a case of giant epidermal inclusion cyst in the breast, which presented as a palpable and painful right breast mass in a 63-year-old man. The sonographic and computed tomography (CT) features are described in-depth. Physical examination revealed a firm, well-defined mass in the upper central portion of the right breast. Ultrasonography showed a 5.2 cm sized, oval, circumscribed, and complex cystic and solid mass with posterior acoustic enhancement, and CT showed a well-defined homogeneous low density mass without enhancement in the right breast. Surgical excision was performed, and pathological examination revealed a giant epidermal inclusion cyst.

MeSH Terms

Acoustics
Breast*
Epidermal Cyst
Humans
Male*
Middle Aged
Multidetector Computed Tomography
Physical Examination
Rare Diseases
Ultrasonography

Figure

• 

  Fig. 1 A 63-year-old man with a growing palpable mass in the right breast, revealing as giant epidermal inclusion cyst. A, B. Transverse scan (A) and longitudinal color Doppler image (B) of breast sonography show an oval shaped, circumscribed, and complex cystic and solid mass in the right breast. It shows the typical pseudotestis pattern with echogenic reflectors (white arrows in B), filiform anechoic areas (black arrows in B), dermal attachment (open arrows in B) and posterior acoustic enhancement (white arrows in A) without vascularity in the mass. C, D. Axial scan (C) and sagittal scan (D) of chest CT show a well-defined homogeneous low density mass (arrows) without enhancement in the upper central portion of the right breast. E. Excised specimen showing a ruptured epidermal inclusion cyst, filled with foul-smelling, dirty greasy material. F. An intradermal cyst lined by keratinizing stratified squamous epithelium is seen. Note layers of desquamated keratin (arrow) within the cyst (hematoxylin and eosin stain × 40). G. Cholesterol clefts (arrow) surrounded by multinucleated giant cells, lymphocytes and histiocytes are noted, suggesting a microruptured cyst (hematoxylin and eosin stain × 100).

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