Myxoid uterine leiomyoma

Last revised by Dr Bruno Di Muzio on 19 Jul 2018

Myxoid uterine leiomyomas are a relatively rare pathological subtype of uterine leiomyomas.

They are not to be confused with myxoid degeneration of a uterine leiomyoma which is a different entity.

Myxoid leiomyomas contain abundant myxoid material between smooth muscle cells. The lesions are soft and translucent but solid. Large lesions may be clinically malignant even if they do not meet standard criteria for the diagnosis of sarcoma. In these lesions, smooth muscle cells are so widely separated by an abundant myxoid material that mitotic count and cellularity cannot be assessed precisely 1

Signal characteristics of the myxoid portion include:

  • T1: geographic and variable signal dependent on protein content 5
  • T2: high signal intensity 
  • T1 C+ (Gd)
    • enhances well except for small foci of mucinous lakes or clefts
    • delayed and prolonged enhancement is seen due to the presence of a myxoid stroma

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

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

 Thank you for updating your details.