|
Lung - Chromogranin A negative adenocarcinoma. |
|
|
Lung - Small cell carcinoma with weak to moderate chromogranin A immunostaining in a fraction of cells. |
|
|
Ovary - Serous high-grade carcinoma showing a weak cytoplasmic chromogranin A positivity in the majority of tumor cells and few interspersed strongly positive cells. |
|
|
Pancreas - Neuroendocrine tumor displaying a strong chromogranin A positivity of all tumor cells. |
|