Recurrent pain abdomen with intestinal obstruction and mass passes per rectum goes in our of ?
**Core Concept**
The question tests the knowledge of a specific clinical presentation that requires a thorough understanding of the pathophysiology of intestinal obstruction and the clinical significance of a palpable abdominal mass.
**Why the Correct Answer is Right**
The presence of recurrent abdominal pain, intestinal obstruction, and a palpable abdominal mass that passes per rectum is a classic presentation of a **gastrointestinal foreign body**, specifically a **bezoar**. A bezoar is a mass of accumulated material, such as food, hair, or other substances, that forms in the gastrointestinal tract. In this case, the bezoar has likely formed in the stomach or small intestine and has caused a partial obstruction, leading to the patient's symptoms.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because a **meckel's diverticulum** is a congenital anomaly of the small intestine that may cause gastrointestinal bleeding or obstruction, but it would not typically present with a palpable abdominal mass that passes per rectum.
**Option B:** This option is incorrect because a **carcinoid tumor** is a type of neuroendocrine tumor that may cause gastrointestinal symptoms, but it would not typically present with a palpable abdominal mass that passes per rectum.
**Option C:** This option is incorrect because a **gallstone ileus** is a complication of gallstone disease that may cause intestinal obstruction, but it would not typically present with a palpable abdominal mass that passes per rectum.
**Clinical Pearl / High-Yield Fact**
A bezoar is a type of gastrointestinal foreign body that can cause a range of symptoms, including abdominal pain, nausea, vomiting, and intestinal obstruction. It is essential to consider a bezoar in the differential diagnosis of patients with these symptoms, particularly if they have a history of eating unusual or large amounts of food.
**Correct Answer:** C. Carcinoid tumor.