Fine-needle aspiration findings of fibroadenoma with pseudolactational changes in the vulva: A case report.

Fibroadenoma is a common benign neoplasm of the breast and ectopic breast tissue, associated with possible lactational changes in pregnant or lactating women. Uncommon pseudolactational changes are possible in this neoplasm among nulliparous women. Fibroadenoma and lactating adenoma are rarely seen in the vulvar region. Theoretically, pseudolactational changes can occur in fibroadenomas of the vulva in young nulliparous women although there have been no reports so far. In this case report, we describe the fine-needle aspiration (FNA) cytology of a vulvar fibroadenoma with pseudolactational changes in a young nulliparous woman. This type of neoplasm has not been reported so far, and it may be misdiagnosed as a malignancy because of its cytological features, such as isolated cells with large nuclei and distinct nucleoli.