Desmoid tumor

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[edit] Discussion

  • Benign, noninflammatory fibroblastic tumors with a tendency to local invasion and recurrence but without metastasis.
  • Desmoid tumors are frequently associated with previous trauma or surgical incision, which may be an important etiological factor.
  • Some cases have been associated with estrogen therapy.
  • Rare lesions with an estimated incidence of 3 or 4 new cases per million population per year.
  • Occur in all age groups but predominantly during the 3rd and 4th decade.
  • Frequent locations in the abdomen are the abdominal wall, the root of the mesentery and the retroperitoneum.
  • Mesenteric desmoid occurs spontaneously or in association with familial polyposis coli syndrome.

[edit] Imaging Findings

[edit] US

  • Homogeneously anechoic or hypoechoic masses.

[edit] CT

  • Most are well circumscribed masses but in a minority of patients they are ill-defined with unsharp borders.
  • Most are relatively homogeneously or focally hyperattenuating as compared to soft tissue on the precontrast scan.
  • Most desmoids will clearly enhance following intravenous contrast medium

[edit] MRI

  • Typically show a low intensity signal on both T1-weighted and T2-weighted scans.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

[edit] References