Striving to be the most comprehensive online resource for high-quality pathology images

 

Type A Thymoma : Immunostains

prev  
slide 8 of 16
next
No Image
Mediastinum_Thymoma_TypeA_SpindleCell_6.jpg

Close

Comments:
Type A thymomas show variable expression of keratins, EMA and p63. CK20 is usually negative. There is positivity for thymic epithelial markers PAX8, FOXN1, and CD205, whereas CD5, CD117, and CD20 are negative. There are no or very few TdT+ immature T-cells in type A thymomas.

This image of type A thymoma shows a prominent cystic component. Cysts of various sizes ranging from microscopic to 0.5 cm were found throughout the tumor.

prev
slide 8 of 16
next