Gastrointestinal Pathology — MCQs

A 40-year-old woman presents with a 2-month history of burning epigastric pain that usually occurs between meals. The pain can be relieved with antacids or food. The patient also reports a recent history of tarry stools. She denies taking aspirin or NSAIDs. Laboratory studies show a microcytic, hypochromic anemia (serum hemoglobin = 8.5 g/dL). Gastroscopy reveals a bleeding mucosal defect in the antrum measuring 1.5 cm in diameter. An endoscopic biopsy shows that the lesion lacks mucosal lining cells and is composed of amorphous, cellular debris and numerous neutrophils. Which of the following is the most important factor in the pathogenesis of this patient's disease?

What is true about Carcinoid tumors?

Angiodysplasia is typically seen in which location?

Which of the following statements are true about gastric lymphoma?

A 51-year-old male with a 20-year history of tobacco chewing presents with a slowly enlarging, white, irregular mass on the floor of his mouth, measuring 1.3 cm. Biopsies of this lesion are most likely to reveal which malignancy?

Colon carcinogenesis is associated with all of the following genetic mutations, EXCEPT:

Total capacity of the stomach is markedly reduced in which of the following conditions?

Which one of the following types of stomach cancers carries the best prognosis?

Striae of Retzius are prominent in which of the following zones of enamel caries?

A clinical study of adult patients with chronic bloody diarrhea is performed. One group of these patients is found to have a statistically increased likelihood for antibodies to Saccharomyces cerevisiae but not anti-neutrophil cytoplasmic autoantibodies, NOD2 gene polymorphisms, TH1 and TH17 immune cell activation, vitamin K deficiency, megaloblastic anemia, and gallstones. Which of the following diseases is this group of patients most likely to have?