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AJR 2000; 175:98
© American Roentgen Ray Society

Centennial Photo Page

The Use of Silicone Foam for Examining The Human Sigmoid Colon

Lane F. Donnelly1

1 Department of Radiology, Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH 45229-3039.



 
From the AJR Archives: Celebrating the ARRS Centennial


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Comment. In many contrast-mediated radiographic techniques, contrast material is instilled into a lumen and adjacent disease inferred by the impressions or outpouchings of the contrast column. In 1962, Cook and Margulis offered an alternative method of evaluating the sigmoid colon. A radiopaque silicone foam, which was administered to the patient as an enema under fluoroscopic guidance, formed a cast that showed impressions from intraluminal lesions and mucosal detail. The cast was then evaluated after it was evacuated by the patient.



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  		Fig. 1. Inflammatory polyp in 6-year-old boy. A, Silicon mold of rectum and sigmoid shows impression (arrow) of polyp. B, Supine radiograph shows silicone foam mixture within colon, before evacuation.

 

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