Aggressive angiomyxoma

Dr Henry Knipe and A.Prof Frank Gaillard et al.

Aggressive angiomyxomas are rare tumours that arise in the pelvis and typically cross the levator ani muscles. Despite its name, it is essentially a benign tumour and the term "aggressive" is given due to a predilection for local recurrence. Only rarely does it metastasise.

It is seen predominantly in women (>90%) in the second through fourth decades of life 3.

Aggressive angiomyxoma is a mesenchymal tumour that arises from connective tissue.

Classically shows involvement of both pelvic and perineal compartments.

On CT, a well-defined mass with attenuation less than or equal to that of adjacent skeletal muscle is typically seen, often with swirled enhancing tissue internally 3.

Reported signal characteristics of the lesion include:

  • T1: tends to be iso to low signal 
  • T2: predominantly high signal and typically gives a swirling appearance 
Share article

Article information

rID: 866
Tags: pelvis, cases
Synonyms or Alternate Spellings:
  • Aggressive angiomyxomas

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.