Imaging competition

Look at the images, answer the questions, and win a prize. The first six correct answers drawn will each win a prize of £50. Please send your answers to dcohen@bmj.com with the word "Competition" in the subject line. Include your name and address in the message. The deadline is 10 May 2004 and winners will be notified by email. Correct answers will be given in the May issue.

Questions

1. What type of scan is this, and what does it show?
2. In two words, what was the initial diagnosis?
3. What associated problem is also shown?
4. What was the treatment?

Anterior pelvis

Posterior pelvis

Anterior pelvis

Posterior pelvis