The Desmoid Tumor Research Foundation

March 2021

Pseudoaneurysm within a desmoid tumor in an extremity: report of 2 cases

Author Information

Long NM(1), Gounder MM(2), Crago AM(3), Chou AJ(4), Panicek DM(1).

(1)Radiology, Memorial Sloan Kettering Cancer Center, New York, NY. (2)Dept of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY. (3)Dept of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY. (4)Dept of Pediatrics, Children's Hospital at Montefiore, The Bronx, NY.

Publication

Skeletal Radiol

Summary

We report two patients with extremity desmoid tumor who were each found at MRI to have an unsuspected pseudoaneurysm within their tumor after prior treatments (surgery and systemic therapy in one, surgery alone in the other). Such a pseudoaneurysm probably results from weakening of an arterial wall by adjacent desmoid tumor, as well as from local trauma. Due to the potential risk for life-threatening rupture of a pseudoaneurysm, one patient underwent surgical repair and the other, coil embolization. To our knowledge the presence of pseudoaneurysm has been reported within a few cases of abdominal desmoid tumor but not within an extremity desmoid tumor. This diagnosis has not been reported to have been made at MRI, either.

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