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Arch Surg. 2005;140:516.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Heterotopic Pancreas

Heterotopic pancreas is defined as pancreatic tissue outside of the normal topographic boundaries of the pancreas, lacking any anatomic or vascular connections to normal pancreas. On microscopy, the tissue contains pancreatic acini, ducts, and islets of Langerhans in a normal anatomical relationship. The incidence ranges from 0.55% to 13.7% in autopsy series with reports more commonly being in the lower end of this range.^1-2 The frequency at laparotomy is between 0.2% and 0.5%.³ In adulthood, the anomaly occurs most commonly in men aged 60 to 80 years.^2-4 In children, heterotopic pancreas occurs commonly in a Meckel diverticulum, and girls predominate by 2:1.⁴

Development of heterotopic pancreatic tissue is believed to be an error in embryological development. Tissue may separate from the pancreas during midgut rotation; alternatively, aberrant heterotopic tissue may be formed during the lateral budding of the rudimentary pancreatic duct while penetrating the intestinal wall with subsequent migration in . . . [Full Text of this Article]

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