Metastases to the breast from extramammary neoplasms are very rare. Correct diagnosis of breast malignancy is important for establishing appropriate management. Here we report a 57-year old male patient with breast metastasis from large cell neuroendocrine carcinoma (LCNEC) which was diagnosed with ultrasonography-guided-core-biopsy.
Keywords: Biopsy; Breast; Core needle; LCNEC; Metastasis; Neoplasm; Ultrasound guided; Unknown primary tumor; Uroendocrine carcinoma.