A hamartoma is a benign tumor composed of various tissues, and one of its locations may be the breast. Patients can present with a painless, asymptomatic and well-demarcated palpable mass in a breast hamartoma. Imaging studies such as mammography, ultrasonography, and magnetic resonance imaging (MRI) show specific radiologic features, whereas a biopsy, either fine needle aspiration or core needle, may be sometimes necessary to confirm the diagnosis.
Defined as a well-established mass with a still incomplete etiology, hamartoma is a rare benign tumor that contains a mixture of different tissues (fibrous, adipose, glandular, and potentially other) in various proportions   . Numerous sites in the body may be the location of its development, including the breast, and between 4-8% of all benign breast lesions, are attributed to hamartomas . This benign tumor has been reported across different age groups after puberty  , but the majority of patients are women in their 30s and 40s    . The clinical presentation is characterized by the presence of a sharply defined, painless, and asymptomatic oval or round-shaped mass in the breast area that is freely palpable    . The nodular appearance of the mass is accompanied by its smooth surface and a soft consistency . However, studies show that up to 60% of breast hamartomas are not possible to palpate, and are thus interpreted as subclinical tumors . Hamartomas are most commonly found in the outer quadrants, and it is not uncommon for the diagnosis to be made incidentally during evaluation of other breast-related pathologies  . Additional symptoms are not present in the setting of hamartomas, which is one of the main clinical features of this tumor . Furthermore, breast hamartomas are mobile and not attached to the surrounding muscle or skin tissue, which might be an important clinical sign as well  .
Entire Body System
The excised left axillary mass was diagnosed as hamartoma arising from the accessory breast tissue ( Figure 4 ). [jbd.or.kr]
2006 (22) 33, F Axillary mass 10 Compatible with the diagnosis of a voluminous nodule NP NP NP Hamartoma NP No (2-year follow-up) Ruiz-Tovar et al., 2006 (23) 43.2 (mean), F, 8 cases Lump (all) 7.25 (mean) Heterogeneous mass with hypoechogenic areas [ncbi.nlm.nih.gov]
CONCLUSION: PDVF imaging during breast sonography is an invaluable technique in the identification of breast hamartomas from other benign or malign breast masses. [ncbi.nlm.nih.gov]
Excised right and left breast masses were 25 19 cm and 21 18 cm in diameter, respectively. Cut sections of both breast masses showed similar features with multinodular appearance and focal fibromyxoid areas. [jbd.or.kr]
Surgical excision of the right lower inner breast mass and right axillary lymph node was subsequently performed at our institution. View larger version (127K) Fig. 1A. —59-year-old woman with right-breast mass. [ajronline.org]
Presentation Palpable left breast mass. Patient Data Age: 35 Gender: Female Loading images... Lower outer quadrant left breast mass (partially behind the nipple), which demonstrates a thin capsule and contains fat and breast parenchyma. [radiopaedia.org]
Large breast cysts can cause pain and might need to be drained to provide relief. Fibrocystic change This is a very common breast disorder in pre-menopausal women, characterised by firm fibrous tissue and cysts. [breastcancerfoundation.org.nz]
Back to Types of Benign Lesions list OR our up-dated Survival, Incidence and Mortality Rates OR breast cancer Treatments … and don’t forget our brand new Homepage. [breast-cancer.ca]
Don't give in to them and just forget it. Push them until you get an answer. Good luck. I hope you get your answer soon. 1 Like about 5 years ago StamPurr I have always had lumpy, bumpy, dense breast tissue. [whatnext.com]
You are your own best advocate, don't forget that. Hugs to you in this scary time. When life knocks you down, roll over, and look at the stars. [community.breastcancer.org]
A detailed physical examination, together with a properly obtained patient history, is the first and perhaps most important step in order to make the diagnosis of a breast hamartoma. Adequate palpation of both breasts and the respective quadrants can result in detection of a mass, after which the use of various imaging studies might be employed. Various procedures have been mentioned, one of the more useful being mammography, the gold-standard procedure in the assessment of breast tissue  . A nonhomogeneous mass composed of adipose, fibrous and glandular tissue that is often enclosed by a thin capsule is the hallmark of a breast hamartoma on mammography, but the variability in the percentage of fat and glandular/connective tissue might pose a challenge to the physician   . For this reason, ultrasonography (US), but also MRI, might be used as adjunctive or even superior methods compared to mammography  . Main findings on the US are the absence of a retrotumor acoustic phenomenon, which is frequently found in malignant lesions  . On MRI, breast hamartomas are visualized as heterogeneous lesions with a sharp and clearly delineated capsule described as a hypointense rim . As mentioned previously, the distribution and dominance of different tissues may necessitate for a biopsy sample to be obtained, either by a core needle biopsy or a fine needle aspiration (FNAC), both valuable in the workup of this tumor   .
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