Article Text


Response regarding an unusual shaped IUS
  1. Adam Forrest, MBChB, MRCOG
  1. Obstetrics and Gynaecology Registrar, Department of Obstetrics and Gynaecology, Derriford Hospital, Plymouth, UK; adam_forrest{at}

Statistics from

I read with interest Dr MacGregor's letter1 regarding the unusual shape of a Mirena® intrauterine system (IUS) following removal. From the photograph it would appear that the capsule has become displaced and the arms of the device enclosed within it.

We have seen a case of complete detachment of the capsule from the frame, with unrecognised retention of the capsule within the uterine cavity. This was only recognised at hysteroscopy for investigation of subsequent infertility. This was described in a letter to the British Journal of Obstetrics and Gynaecology in 2008.2

It would seem prudent to check the integrity of the IUS at removal.


View Abstract


  • Competing interests None.

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.