May 2018 - Presented by Dr. Dongguang Wei (Mentored by: Dr. Kristin Olson)

Clinical History

A 69-year-old female with a history of cecal tubular adenoma and tubulovillous adenomas and a family history of colon cancer presented for a repeat colonoscopy. A 2 cm sessile polyp at the base of the cecum was removed by hot snare and cold forceps.


Immunohistochemical Staining

Synaptophysin Positive
Ki67 <2%



Click on image to enlarge.

Figure 1
H&E1

    

Figure 2
H&E2

         
Figure 3
Synaptophysin1
Figure 4
Synaptophysin2
         

Figure 5
ki-67a

Figure 6
ki-67b





Which of the following is most likely the diagnosis?

Choose one answer and submit.






 

The correct answer is

E.) Composite intestinal adenoma-microcarcinoid (CIAM)

> Learn more about this diagnosis.