T2 dark spot sign

T2 dark spot sign is an MRI appearance of endometriomas seen as a result of chronic haemorrhage. The sign is useful in differentiating a solitary endometrioma from a functional haemorrhagic ovarian cyst, as both might show high T1 signal with T2 shading

The T2 dark spot, described in the sign, is seen within the cyst, often against the cyst wall, but not within the cyst wall itself (which is usually of low T2 signal due to haemosiderin-laden macrophages and fibrous component of the cyst wall).

Share article

Article information

rID: 39765
System: Gynaecology
Section: Signs
Synonyms or Alternate Spellings:
  • T2 dark spot sign in endometrioma

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1
    Drag here to reorder.
  • Drag
    Case 2
    Drag here to reorder.
  • Updating… Please wait.

    Alert accept

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

    Alert accept Thank you for updating your details.