Myometrial metastases

Metastases to the myometrium is an uncommon situation but has been occasionally reported with extrauterine cancers such as breast cancer   (considered commonest primary site) and colon cancer (e.g. sigmoid colon ).

Differential diagnosis

Possible differential considerations include

• primary myometrial based uterine lesions
  • uterine leiomyoma
  • uterine leiomyosarcoma
• myometrial invasion from an endometrial lesion 
  • e.g. endometrial cancer