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 22 March 2018

Advanced search - the global online resource for all aspects of gastroenterology, hepatology and endoscopy Profile of Roy Pounder


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Extramedullary haemopoiesis.
An elderly woman admitted with large bowel obstruction. On rectal examination, a tumor could be felt prolapsing down into the rectum.

At laparotomy the large and small bowel mesentery was seen to be studded with what was initially thought to be tumor. This was biopsied and eventually shown to be areas of extramedullary haemopoiesis. The patient had chronic myeloid leukaemia and myelodysplasia. The usual sites of extramedullary haemopoiesis are the liver and spleen, but the process may occur anywhere there is lymphoid tissue - including the gut mesentery.


Peter Devitt, Adelaide, Australia

Extramedullary haemopoiesis.

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