Abdominal pain, nausea, and vomiting in a 10-year-old girl.
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What is the diagnosis?
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DIAGNOSIS: Small bowel obstruction with sunflower seed bezoar. Multiple unshelled seeds were seen elsewhere throughout the intestine (Figures 4 and 5). After the CT scan was performed, further clinical history was elicited, and the child said that she had been eating sunflower seeds for the past 2 days. The exact volume of seeds was unknown.
The operative report described a complete small bowel obstruction with a transition point just distal to a palpable intraluminal mass. The intraluminal mass was solid and freely mobile. The mass was easily "milked" forward through the distal small intestine and into the cecum. No residual mass, adhesion, intussusception, or anatomical abnormality was found. The mass eventually passed through the colon postoperatively without any diffi culty. No enterotomy was needed. Small bowel obstruction with sunflower seed meat bezoar was diagnosed postoperatively.
A bezoar is a mass of indigestible or poorly digestible material that forms within the digestive tract. Bezoars often lead to intestinal obstruction, as in our patient. The specific type of bezoar seen in this case was phytobezoar, which comprises plant material such as vegetable or fruit fibers or seeds. Other types of bezoars include trichobezoar, composed of hair, and lithobezoar, composed of hard concretions such as small stones or pebbles.
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Clinically, these patients often present with signs and symptoms of bowel obstruction. A palpable abdominal mass is occasionally found. Upon rectal examination, the presence of the "colonic crunch sign" can increase the suspicion of bezoar obstruction. The colonic crunch sign is defined as the palpation of a prickly mass on digital rectal examination and can be found in sunflower seed bezoar and lithobezoar (1).
Intestinal obstruction with sunflower seed bezoar is not uncommon, and several case reports have been published. One study from Israel found that seed bezoars found in the rectum were the most common cause of fecal impaction requiring hospitalization (2). Caution is advised in allowing young children to consume seeds if they are unable to shell and chew the seeds prior to ingestion. Also, dietary consumption of unshelled seeds or seeds with shell fragments should be accompanied by an awareness that large quantities may lead to phytobezoar formation and intestinal obstruction.
The author thanks Dr. Mark Fulmer and Dr. Valerie Gorman for providing the case for report.
(1.) Melchreit R, McGowan G, Hyams JS. "Colonic crunch" sign in sunflower-seed bezoar. N Engl J Med 1984;310(26):1748-1749.
(2.) Eitan A, Bickel A, Katz IM. Fecal impaction in adults: report of 30 cases of seed bezoars in the rectum. Dis Colon Rectum 2006;49(11):1768-1771.
William G. Schucany, MD
From the Department of Radiology, Baylor University Medical Center, Dallas, Texas.
Corresponding author: William G. Schucany, MD, Department of Radiology, Baylor University Medical Center, 3500 Gaston Avenue, Dallas, Texas 75246 (e-mail: firstname.lastname@example.org).
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|Title Annotation:||Radiology Report|
|Author:||Schucany, William G.|
|Publication:||Baylor University Medical Center Proceedings|
|Article Type:||Case study|
|Date:||Apr 1, 2009|
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