Breast Malignant Adenomyoepithelioma with lymph Node Metastasis

Ahlam A. Awamleh, Mihir Gudi, Sami Shousha


Malignant adenomyoepithelioma of the breast is a rare tumour with around 30 cases reported in the literature. Metastases associated with these tumours are usually haematogenous. Axillary lymph node metastases are thought to be unusual, and it has been recently suggested that axillary node dissection is not indicated unless clinically palpable.
This case report aims to highlight that lymph node metastasis may occur in the absence of clinically palpable nodes.

We present the case of a 63-year-old woman, who developed a malignant adenomyoepithelioma with no palpable regional lymph nodes. She underwent mastectomy with axillary lymph node clearance.
The axillary lymph node clearance showed one of two axillary lymph node with positive metastasis, that included epithelial and myoepithelial elements, in spite of the absence of clinically enlarged nodes.
We suggest that histological examination of axillary sentinel node(s) or node sampling may be worthwhile in this condition.

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