Epidermoid cyst: Benign cutaneous or subcutaneous epithelial cyst, usually arising from obstructed hair follicle
Epidermal elements implant within dermis
IMAGING
General Features
Mammographic Findings
Ultrasonographic Findings
MR Findings
Image-Guided Biopsy
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Paliotta A et al: Epidermal inclusion cyst of the breast: A literature review. Oncol Lett. 11(1):657-660, 2016
Giess CS et al: Distinguishing breast skin lesions from superficial breast parenchymal lesions: diagnostic criteria, imaging characteristics, and pitfalls. Radiographics. 31(7):1959-72, 2011
Kim HK et al: Subcutaneous epidermal inclusion cysts: ultrasound (US) and MR imaging findings. Skeletal Radiol. 40(11):1415-9, 2011
Kalli S et al: Lesions of the skin and superficial tissue at breast MR imaging. Radiographics. 30(7):1891-913, 2010
Bergmann-Koester CU et al: Epidermal cyst of the breast mimicking malignancy: clinical, radiological, and histological correlation. Arch Gynecol Obstet. 273(5):312-4, 2006
Crystal P et al: Concentric rings within a breast mass on sonography: lamellated keratin in an epidermal inclusion cyst. AJR Am J Roentgenol. 184(3 Suppl):S47-8, 2005
Kim HS et al: Spectrum of sonographic findings in superficial breast masses. J Ultrasound Med. 24(5):663-80, 2005
Celik V et al: Epidermal inclusion cyst of the breast: clinical, radiologic, and pathologic correlation. Breast J. 10(1):57, 2004
Kwak JY et al: Imaging findings in a case of epidermal inclusion cyst arising within the breast parenchyma. J Clin Ultrasound. 32(3):141-3, 2004
Kapila K et al: Fine needle aspiration cytology of epidermal inclusion cysts in the male breast. Acta Cytol. 47(2):315-7, 2003
Morris PC et al: Epidermal cyst of the breast: detection in a screening programme. Australas Radiol. 43(1):12-5, 1999
Davies JD et al: Mammary epidermoid inclusion cysts after wide-core needle biopsies. Histopathology. 31(6):549-51, 1997
Denison CM et al: Epidermal inclusion cysts of the breast: three lesions with calcifications. Radiology. 204(2):493-6, 1997
Cooper RA et al: Epidermal inclusion cysts in the male breast. Can Assoc Radiol J. 47(2):92-3, 1996
Chantra PK et al: Circumscribed fibrocystic mastopathy with formation of an epidermal cyst. AJR Am J Roentgenol. 163(4):831-2, 1994
Fajardo LL et al: Epidermal inclusion cyst after reduction mammoplasty. Radiology. 186(1):103-6, 1993
Shousha S et al: Recurrent epidermal cysts of the breast. Histopathology. 21(3):299-300, 1992
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Terminology
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TERMINOLOGY
Synonyms
Epidermoid cyst
Definitions
Epidermoid cyst: Benign cutaneous or subcutaneous epithelial cyst, usually arising from obstructed hair follicle
Epidermal elements implant within dermis
IMAGING
General Features
Mammographic Findings
Ultrasonographic Findings
MR Findings
Image-Guided Biopsy
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Paliotta A et al: Epidermal inclusion cyst of the breast: A literature review. Oncol Lett. 11(1):657-660, 2016
Giess CS et al: Distinguishing breast skin lesions from superficial breast parenchymal lesions: diagnostic criteria, imaging characteristics, and pitfalls. Radiographics. 31(7):1959-72, 2011
Kim HK et al: Subcutaneous epidermal inclusion cysts: ultrasound (US) and MR imaging findings. Skeletal Radiol. 40(11):1415-9, 2011
Kalli S et al: Lesions of the skin and superficial tissue at breast MR imaging. Radiographics. 30(7):1891-913, 2010
Bergmann-Koester CU et al: Epidermal cyst of the breast mimicking malignancy: clinical, radiological, and histological correlation. Arch Gynecol Obstet. 273(5):312-4, 2006
Crystal P et al: Concentric rings within a breast mass on sonography: lamellated keratin in an epidermal inclusion cyst. AJR Am J Roentgenol. 184(3 Suppl):S47-8, 2005
Kim HS et al: Spectrum of sonographic findings in superficial breast masses. J Ultrasound Med. 24(5):663-80, 2005
Celik V et al: Epidermal inclusion cyst of the breast: clinical, radiologic, and pathologic correlation. Breast J. 10(1):57, 2004
Kwak JY et al: Imaging findings in a case of epidermal inclusion cyst arising within the breast parenchyma. J Clin Ultrasound. 32(3):141-3, 2004
Kapila K et al: Fine needle aspiration cytology of epidermal inclusion cysts in the male breast. Acta Cytol. 47(2):315-7, 2003
Morris PC et al: Epidermal cyst of the breast: detection in a screening programme. Australas Radiol. 43(1):12-5, 1999
Davies JD et al: Mammary epidermoid inclusion cysts after wide-core needle biopsies. Histopathology. 31(6):549-51, 1997
Denison CM et al: Epidermal inclusion cysts of the breast: three lesions with calcifications. Radiology. 204(2):493-6, 1997
Cooper RA et al: Epidermal inclusion cysts in the male breast. Can Assoc Radiol J. 47(2):92-3, 1996
Chantra PK et al: Circumscribed fibrocystic mastopathy with formation of an epidermal cyst. AJR Am J Roentgenol. 163(4):831-2, 1994
Fajardo LL et al: Epidermal inclusion cyst after reduction mammoplasty. Radiology. 186(1):103-6, 1993
Shousha S et al: Recurrent epidermal cysts of the breast. Histopathology. 21(3):299-300, 1992
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