The most common site of heterotopic pancreatic tissue
A. Stomach
B. Jejunum
C. Appendix
D. Splenic hilum
A. Stomach
B. Jejunum
C. Appendix
D. Splenic hilum
Ans:
A. Stomach
• Pancreatic tissue has been documented
in ectopic sites in the gastrointestinal tract and even elsewhere.
• The most common site for nodules of
aberrant pancreatic tissue is on the wall of the stomach, duodenum or jejunum.
The nodules may be found in submucosa 75%.
and in the muscular layer or subserous coat in the remainder.
• The overall incidence and relative
frequency with which it cause symptoms varies.
• Autopsy studies have found
heterotopic pancreatic tissue in the duodenum in as high as 14% of individuals.
• Scattered pancreatic tissue has been
found in Meckel diverticulum, gallbladder, colon, Spleen, Liver, Bile ducts,
mesentery or even omentum.
• Enterogenous cysts of the thorax have
been reported to contain typical pancreatic tissue, including islets.
• With the advent of widespread upper
gastrointestinal endoscopy and improvements in contrast studies of the
alimentary tract, ectopic pancreas of the stomach and duodenum is being more
frequently recognized.
• The pathognomic radiological finding
is a smooth, rounded or negative shadow with evidence of a tiny umbilication or
even a small duct which may be outlined by a line of barium.
• Probably most individuals with
ectopic pancreas have no symptoms whatsoever.
• However, abdominal pain surqestive of
peptic ulcer disease sometimes occurs.
• Interference with gastric emptyrg by
lesions situated in the pyloric region, direct production of a peptic ulcer,
gastrointestinal haemorrhage, intussuscption, and development of a benign or
malignant neoplasm arising in the pancreatic rest, have all been documented.
