Breast, Fibroadenoma [LMP70338]

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Diagnostic Modality: 
Cytology
Disease Category: 
Neoplasia
Diagnosis: 
Fibroadenoma
Species: 
Human
Organ System: 
Breast
Gender: 
Female
Age: 
56 years
Diagnosis Code: 
ICD-10: D24 | ICD-O: 9010/0
Slide Contributor Information
Hodgson, A., Latta, E.

Keywords

benign, cytology, fibroepithelial, breast

Clinical History

Fine needle aspiration left breast mass at 5 o’clock.

Clinical Discussion

Fibroadenomas are the most common benign tumor of the breast. These fibroepithelial lesions usually present as a firm, well-circumscribed nodule in the breast with a rubbery, gray-white surface. They can be multiple and bilateral in nature are more common in younger women; but can also occur in all ages. These lesions are now more commonly diagnosed by core biopsy, however they have characteristic features seen from fine needle aspiration including a hypercellular aspirate with a monolayer of epithelial cells mixed with myoepithelial cells in a "staghorn" or antler-like configuration. Cellular cohesiveness is often appreciated. A fibromyxoid stroma is common, in addition to numerous bare nuclei.