Figure 1. Histopathological analysis of an appendectomy specimen (hematoxylin and eosin staining, original magnification ×400).
PHOTO QUIZ
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CID 2014:58 (15 April)
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1129
Downloaded from http://cid.oxfordjournals.org/ at UPVA on June 16, 2015
A 16-year-old female presented with a 1-day history of abdominal pain, nausea, and vomiting. The pain started in the periumbilical region and moved subsequently to the right lower quadrant. There was no associated fever, chills, urinary symptoms, or diarrhea. On examination, the patient was afebrile with a heart rate of 116 bpm but a normal blood pressure. The abdomen was tender, especially in the right lower quadrant, with no distension. Bowel sounds were diminished. Lab test results revealed a hemoglobin value of 13.4 g/dL and a white blood cell count of 7.0 × 109 cells/L without eosinophilia. Her blood chemistry levels, including kidney and liver function tests, were within normal limits. Computed tomography of the abdomen showed thickened appendix and ileocecum. The patient underwent laparoscopic appendectomy. Hematoxylin and eosin–stained slides of the appendix are shown in Figures 1A and 1B. What is your diagnosis?