An official website of the United States government. However, we cannot answer medical or research questions or give advice. Stroma is generally more sparse than in conventional fibroadenoma. , Circumscribed breast mass composed of benign stromal and epithelial cells, Atypical ductal or lobular hyperplasia may be present, Carcinoma, in situ or invasive, may be present, Lacks significant stromal hypercellularity, Elevated stromal mitotic rate, usually >4-5 per 10 hpf, abnormal forms may be found, May contain poorly circumscribed areas of fibrocystic change, Lobules typically present (may be atrophic), Frequent intracanalicular or tubular glandular proliferation. Would you like email updates of new search results? We welcome suggestions or questions about using the website. Can occur at any age, median age of 25 years ( J R Coll Surg Edinb 1988;33:16 ) Juvenile fibroadenoma generally occurs in younger and adolescent patients < 20 years; reported in children at a very young age ( Am J Surg Pathol . One definition of "cellular" is: "stromal cells are touching one another". Biphasic lesions of the breast. Most common breast tumor in adolescent and young women. Clipboard, Search History, and several other advanced features are temporarily unavailable. Nigam JS, Tewari P, Prasad T, Kumar T, Kumar A. Cureus. Stanton SE, Gad E, Ramos E, Corulli L, Annis J, Childs J, Katayama H, Hanash S, Marks J, Disis ML. sharing sensitive information, make sure youre on a federal We consider the term merely descriptive. Fibroadenomas may demonstrate estrogen and progesterone sensitivity and may grow during pregnancy. 1994 Jul 7;331(1):10-5. Diagn Cytopathol. Within this cohort, women who had fibroadenoma were compared to women who did not have fibroadenoma. The https:// ensures that you are connecting to the Bethesda, MD 20894, Web Policies Before HHS Vulnerability Disclosure, Help The pictured lesion is sclerosing adenosis, a benign breast lesion characterized by expansion of glands (with preserved 2 cell layers: inner epithelial and outer myoepithelial cells) within the terminal duct lobular unit with distortion by fibrosis / sclerosis. Unable to load your collection due to an error, Unable to load your delegates due to an error. Results: 1994 Jul 7;331(1):10-5. Stanford University School of Medicine. Contact | Focally, the lesion approaches the inked margin; partial lesion transection cannot be excluded. Musio F, Mozingo D, Otchy DP. Tumors >500 g or disproportionally large compared to rest of breast. Women with complex fibroadenomas may therefore be managed with a conservative approach, similar to the approach now recommended for women with simple fibroadenomas. NPJ Breast Cancer. Breast. http://surgpathcriteria.stanford.edu/, , Richard L Kempson MD Methods: From excisional biopsy or resected specimens of fibroadenoma (FA) cases treated at our institution from 2004 to 2013, we chose 46 . Contributed by Andrey Bychkov, M.D., Ph.D. Fibroadenomatoid changes (sclerosing lobular hyperplasia, fibroadenomatoid mastopathy), Benign biphasic tumor composed of a proliferation of both glandular epithelial and stromal components of the terminal duct lobular unit, Most common breast tumor in adolescent and young women, Benign biphasic tumor comprised of glandular epithelium and specialized interlobular stroma of the terminal ductal lobular unit (, Can show a spectrum of histologic appearances; generally uniform in stromal cellularity and distribution of glandular and stromal elements within a given lesion (an important distinction from phyllodes tumor), Fibroadenomas with hypercellular stroma and prominent intracanalicular pattern can show morphologic overlap with benign phyllodes tumors, especially in needle biopsy specimens, Fibroadenoma, usual type fibroadenoma, adult type fibroadenoma, Most common benign tumor of the female breast, Can occur at any age, median age of 25 years (, Juvenile fibroadenoma generally occurs in younger and adolescent patients < 20 years; reported in children at a very young age (, Complex fibroadenoma reported in older patients with median age between 35 - 47 years (, Increased relative risk (1.5 - 2.0) of subsequent breast cancer; relative risk is higher (3.1) in complex fibroadenomas; no increased risk for juvenile fibroadenoma (, Can occur in axilla accessory breast tissue, Increased risk associated with cyclosporine immunosuppression (, Often presents as painless, firm, mobile, slow growing mass, Usually solitary, can be multiple and bilateral, Usually less than 3 cm in diameter but may grow to large size (, Histologic examination of involved tissue, Sonographically seen usually as a round or oval mass, smooth margins with hypo or isoechoic features (, Can be associated with calcifications, especially in postmenopausal patients, 16 year old girl with 28 cm left breast mass (, 17 year old girl with recurrent juvenile fibroadenoma (, 18 year old woman with mass in axilla accessory breast tissue (, 35 year old woman with left breast mass (, 37 year old woman with increased uptake of breast mass on PET scan (, 44 year old woman with bilateral breast masses (, Management depends on patient risk factors and patient preference, Conservative management with close clinical followup, especially if concordant radiology findings (, Local surgical excision, especially if symptomatic (, If atypia / neoplasia is found within a fibroadenoma, the surgical and systemic therapeutic management is specific and appropriate to the primary atypical / neoplastic lesion, Firm, well circumscribed, ovoid mass with bosselated surface, lobulations bulge above the cut surface, slit-like spaces, May have mucoid or fibrotic appearance; can be calcified, Biphasic tumor, proliferation of both glandular and stromal elements, 2 recognized growth patterns (of no clinical significance, both patterns may occur within a single lesion), Intracanalicular: glands are compressed into linear branching structures by proliferating stroma, Pericanalicular: glands retain open lumens but are separated by expanded stroma, Glandular elements have intact myoepithelial cell layer, Often associated with usual type ductal hyperplasia, apocrine metaplasia, cyst formation or squamous metaplasia, Rare mitotic activity can be observed in the glandular component, has no clinical significance, Generally uniform cellularity within a given lesion, Collagen and bland spindle shaped stromal cells with ovoid or elongated nuclei, Usually no mitotic activity; rare mitotic activity may be present in young or pregnant patients (, Stroma may show myxoid change or hyalinization, Rarely benign heterologous stromal elements (adipose, smooth muscle, osteochondroid metaplasia), Fibroadenomas may be involved by mammary neoplasia (e.g.

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