An appendiceal fecal stone may cause pain in the abdomen in severe cases, but usually does not cause stomach pain.
The appendix is located in the right iliac fossa in the lower right abdomen, and an appendiceal fecal stone is the equivalent of a tiny stone or food residue. When the fecal stone is small, it is usually free to move in and out of the lumen of the appendix and is emptied into the lumen of the bowel by peristalsis of the appendix, and therefore does not usually cause any particular symptoms.
When the fecal stone is large, it may block the lumen of the appendix, preventing it from draining into the intestinal lumen, which can cause a bacterial infection in the lumen, leading to an attack of acute appendicitis. At this point, the patient may experience severe pain, usually in the abdomen, and this condition is usually treated by recommending surgical removal of the appendix to avoid recurrent episodes of appendicitis.
Many appendiceal fecal stones come from food, and some care should be taken when eating and not doing strenuous activities immediately after meals.
If an appendiceal fecal stone causes an attack of acute appendicitis, early surgical treatment is recommended to avoid recurrence of the condition.