Answer to Diagnostic Challenge (from page 124)

1. Theobald D: What is inguinal hernia? Available at: http://ct.essortment.com/inguinalhernia_revv.htm.

2. Rumack C, Wilson, S, Charboneau J: Diagnostic Ultrasound. Vol. 2., 2nd ed. St Louis, Mo, Mosby, 1998.

3. Dr. McKernan: All about inguinal hernias: symptoms and causes. Available at: www.mindspring.com/~video/ingheind.