Appendiceal Tumors

 Mucinous cystadenocarcinoma (90%)


image Colonic-type adenocarcinoma (10%)

image Lymphoma (< 1%)

image Carcinoid (common, usually incidental at appendectomy)





IMAGING




• Round or oval, cystic or solid, mass near tip of cecum

• Mucocele
image RLQ soft tissue mass with curvilinear mural calcification on radiography is highly suggestive

image Ovoid cystic mass ± internal echoes (septations) on US

• Mucinous tumor: RLQ cystic mass, usually > 2 cm
image Mucinous type has strong propensity to form mucocele

image May have curvilinear calcification in wall

image Mucinous cystadenocarcinoma is most common cause of pseudomyxoma peritonei

• Lymphoma: Cylindrical, soft tissue density mass
image Cannot distinguish from carcinoma on CT

Only gold members can continue reading. Log In or Register to continue

Related posts:

Rectal Prolapse and Intussusception Cecal Volvulus Biloma Congenital Hepatic Fibrosis Choledochal Cyst Crohn Disease

Stay updated, free articles. Join our Telegram channel
Tags:
Nov 16, 2016 | Posted by in GASTROINTESTINAL IMAGING | Comments Off on Appendiceal Tumors

Full access? Get Clinical Tree
Get Clinical Tree app for offline access