Infiltrative mesenteric desmoid tumor, main duct mucinous neoplasm of the pancreas

Case contributed by Michael P Hartung , 21 Oct 2018
Diagnosis certain
Changed by Michael P Hartung, 23 Oct 2018
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Infiltrative mesenteric desmoid (fibromatosis)tumor, main duct mucinous neoplasm of the pancreas
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Very complex case. Classic finding of main duct mucinous neoplasm of the pancreas, which carries around a 65% risk of harboring carcinoma.

The key to understanding the mesenteric findings is noticing that this patient had a total colectomy, and then asking "why?". 

At the time of this dictation, no additional history was given, therefore, this fact was (cruelly) withheld from the presentation. This patient underwent total colectomy many years prior for familial polyposis and resection of desmoid tumor in the 70s. 

This is a great example of a more insidious appearance of intraabdominal desmoid, which can have a mass-like, infiltrative, or combined appearance. FAP patients are at particularly notable risk after colectomy. 

Companion solid mesenteric desmoid.

  • -<p>Very complex case. Classic finding of main duct mucinous neoplasm of the pancreas, which carries around a 65% risk of harboring carcinoma.</p><p>The key to understanding the mesenteric findings is noticing that this patient had a total colectomy, and then asking "why?". </p><p>At the time of this dictation, no additional history was given, therefore, this fact was (cruelly) withheld from the presentation. This patient underwent total colectomy many years prior for familial polyposis and resection of desmoid tumor in the 70s. </p><p>This is a great example of a more insidious appearance of intraabdominal desmoid, which can have a mass-like, infiltrative, or combined appearance. FAP patients are at particularly notable risk after colectomy. </p>
  • +<p>Very complex case. Classic finding of main duct mucinous neoplasm of the pancreas, which carries around a 65% risk of harboring carcinoma.</p><p>The key to understanding the mesenteric findings is noticing that this patient had a total colectomy, and then asking "why?". </p><p>At the time of this dictation, no additional history was given, therefore, this fact was (cruelly) withheld from the presentation. This patient underwent total colectomy many years prior for familial polyposis and resection of desmoid tumor in the 70s. </p><p>This is a great example of a more insidious appearance of intraabdominal desmoid, which can have a mass-like, infiltrative, or combined appearance. FAP patients are at particularly notable risk after colectomy. </p><p><a title="Companion solid mesenteric desmoid." href="/cases/massive-intraabdominal-desmoid-tumor-fibromatosis">Companion solid mesenteric desmoid.</a></p>

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Infiltrative mesenteric desmoid (fibromatosis), main duct mucinous neoplasm of the pancreas
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