Figure 5. A-F. Tumor cells did not exhibit staining with pancytokeratin or thyroglobulin .Neoplastic cells reacted with antibodies such as CD20 and kappa , while they were negative for lambda . Ki-67 proliferation index was 80-85%

From

A Rare Presentation of Lymphoma: Pancreatic and Thyroid Involvement

Semra Ayturk, Mehmet Celik, Nuray Can, Ebru Tastekin, Onur Mert, Ahmet Kucukkarda, Atakan Sezer, Sibel Guldiken, Armagan Tugrul

American Journal of Medical Case Reports. 2015, 3(11), 367-371 doi:10.12691/ajmcr-3-11-5