4) Xanthogranulomatous appendicitis is usually an incidental finding in patients with chronic inflammation and obstruction by fecalith
is a hard mass of dried body waste, or stool.
The etiologies include obstruction by a fecalith
or tumor, adhesions, endometriosis or volvulus.
Mucocele usually denotes gross dilatation of the appendiceal lumen, with mucin accumulation in the presence or absence of luminal obstruction secondary to neoplasia, or denotes a nonneoplastic process such as fecalith
, postinflammatory scarring, endometriosis, or a carcinoid tumor.
1) Stump appendicitis results from obstruction of the lumen of the remaining appendix, usually by a fecalith