Familial Fibroadenoma of Breast: A Case Series of Uncommon Presentation of a Common Disease

Fibroadenoma is the second most common tumour in the breast (after carcinoma) and is the most common tumour in women younger than 30 years. Multiple fibroadenomas (more than five lesions in one breast) are very uncommon and are considered disease. Familial bilateral multiple fibroadenoma is an exceedingly rare presentation with only one such case described earlier in medical literature where three siblings had multiple bilateral breast fibroadenomas. We report a case series of familial fibroadenomas present in four siblings, along with one case presenting with bilateral multiple fibroadenoma, which is first in the medical literature.

Fine needle Aspiration were suggestive of bilateral multiple fibroadenoma. Upon surgery, 10 fibroadenomas were removed from the right breast and 9 fibroadenomas were removed from the left breast. Histopathological examination was consistent with fibroadenoma with myxomatous change.

Familial fibroadenoma of the breast is an exceedingly rare presentation of a very common tumour. This was the first reported case of 4 siblings having familial fibroadenoma. Further studies are required to investigate the familial nature of this disorder.