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A mother brings her 2-year-old son to the pediatrician following an episode of abdominal pain and bloody stool. The child has otherwise been healthy and growing normally. On physical exam, the patient is irritable with guarding of the right lower quadrant of the abdomen. Based on clinical suspicion, pertechnetate scintigraphy demonstrates increased uptake in the right lower abdomen. Which of the following embryologic structures is associated with this patient’s condition?
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A 1-year-old previously healthy baby boy presents to the emergency department with 3 hours of intermittent abdominal pain, vomiting, and one episode of dark red stools. On exam, his abdomen is tender to palpation, and there are decreased bowel sounds. A CT scan reveals air fluid levels and a cystic mass in the ileum. Gross specimen histology reveals gastric tissue. What is the cause of this patient's problems?
Obstruction of the lumen of the appendix by a fecalith
Abnormal closure of the vitelline duct
Twisting of the midgut secondary to malrotation
Hypertrophy of the pylorus
Ingestion of contaminated water
A concerned father brings his 2 year-old son to the clinic for evaluation. In the past 24 hours, the child has had multiple episodes of painless bloody stools. On physical examination, the child's vital signs are within normal limits. There is mild generalized discomfort on palpation of the abdomen but no rebound or guarding. A technetium-99m (99mTc) pertechnetate scan indicates increased activity in two locations within the abdomen. Cells originating in which organ account for the increased radionucleotide activity?
An 8-month-old boy is brought to the emergency room by his mother who notes that the child has not been passing stool regularly. Palpation and radiographic imaging of the umbilical region reveal the presence of fecal material in an abnormal out-pocketing of bowel. Which of the following is a common complication seen in this condition?
Enlarged rugal folds
Paneth cell metaplasia
A 2-year-old female with abdominal pain undergoes laparoscopic surgery. An outpouching of tissue is excised from the ileum and sent to the laboratory for evaluation. The pathologist notes inflammation and the presence of mucosa, submucosa, and muscle in the walls of the specimen. Which of the following is the most likely diagnosis?
A 2-year-old male is brought to his pediatrician by his mother because of abdominal pain and blood in the stool. Scintigraphy reveals uptake in the right lower quadrant of the abdomen. Persistence of which of the following structures is the most likely cause of this patient's symptoms?