Date of Presentation:11/29/2021

Attending pathologist: Martha Yearsley, MD

Presented by: Saba Shafi, MD

Prepared by: Saba Shafi, MD

Organ:Appendix

HISTORY:

A 65-year-old male presented to the ED with a complaint of RLQ abdominal pain x2 weeks that continued to worsen. He underwent a CT scan which showed inflammatory changes surrounding the sigmoid colon associated with diverticulosis and adjacent inseparable appendix, unable to rule out appendicitis. He underwent a laparoscopic appendectomy. No diverticulosis apparent during surgery but the appendix was adhered to the sigmoid colon and was removed in 2 pieces. The resected specimen of appendix is shown.

GROSS:

What is the most likely diagnosis?

  1. Metastatic signet ring cell carcinoma
  2. Mucinous adenocarcinoma
  3. Classic carcinoid tumor
  4. Goblet cell adenocarcinoma
Goblet cell adenocarcinoma