Endocrine Abstracts

Neuroendocrine tumors (NETs) of the breast are very rare. They represent less than 1% of breast carcinomas. It is important to differentiate metastatic neuroendocrine neoplasia from primary neuroendocrine neoplasia of the breast. Histopathological misinterpretation of a breast NET is common. In a study of 18 NET cases that metastasized to the breast, it was found that 62% of these tumors originated from the gastrointestinal tract and 28% from the lung. Forty-four percent of th...