Section 2 - Answer Case A 4-year-old male patient was admitted to the emergency department with right lower quadrant pain. On physical examination, there was tenderness and voluntary defense in the right lower quadrant. Rebound tenderness was not observed. Initially, the patient was sent for sonographic examination [Figure 1] and then to the abdominal radiography [Figure 2]. Images of the mentioned examinations are shown. Interpretation A 4-year-old male patient was admitted to the emergency department with right lower quadrant pain that started yesterday evening. The anamnesis was nonspecific. On physical examination, there was tenderness and voluntary defense in the right lower quadrant, but rebound tenderness was not observed. The patient was sent to the radiology department for ultrasonographic examination with a clinical diagnosis of acute appendicitis. Ultrasonography of the right lower quadrant revealed [Figure 1] a thin linear echogenicity causing reverberation artifact inside the bowel lumen. It was impressed as a metallic foreign body that probably a pin. The finding on ultrasound was confirmed with plain radiography [Figure 2] which showed a metallic shadow (pin) in the right side pelvic region.
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