26 December 2025
: Case report 
Primary Well-Differentiated Neuroendocrine Tumor of the Breast: A Case Report and Literature Review
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Patient complains / malpractice, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis), Rare coexistence of disease or pathology
Sanjna Sai Gudena DEF 1*, Nilesh Digvijay Kashikar E 2, Matthew Charles Wakefield E 3DOI: 10.12659/AJCR.950684
Am J Case Rep 2025; 26:e950684
Figure 8 Lung involvement by metastatic breast carcinoma. (A) High-power magnification image of the H&E-stained fine-needle aspirate from the lung lesion appears to be predominantly necrotic with an admixture of inflammatory cells, macrophages, and a few probable metastatic malignant cells (blue arrows). (B) Immunohistochemical stain for a breast marker, GATA3, was performed. The stain labeled rare, scattered, malignant-appearing cells (black arrows), confirming the presence of metastatic breast carcinoma to the lung.