Cryptorchidism Cryptorchidism is distinct from monorchism, the condition of having only one testicle. Though the condition may occur on one or both sides, it more commonly affects the right testis. A testis absent from the normal scrotal position may be: About two-thirds of cases without other abnormalities are unilateral; most of the other third involve both testes. In 90% of cases, an undescended testis can be felt in the inguinal canal. In a small minority of cases, missing testes may be found in the abdomen or appear to be nonexistent (truly "hidden"). Undescended testes are associated with reduced fertility, increased risk
Users' Guides to the Medical Literature study valid? Evidence-Based Medicine Working Group. JAMA, 273(16), pp. 1292–1295. Available at: http://jama.ama-assn.org. Richardson, W.S. & Detsky, A.S., 1995. Users’ guides to the medical literature. VII. How to use a clinical decision analysis. B. What are the results and will they help me in caring for my patients? Evidence Based Medicine Working Group. JAMA, 273(20), pp. 1610–1613. Available at: http://jama.ama-assn.org. Richardson, W.S. et al., 1999. Users’ Guides to the Medical Literature: XV. How to Use an Article About Disease Probability for Differential Diagnosis. JAMA, 281(13), pp. 1214–1219. Available at: http://jama.ama-assn.org/cgi/doi/10.1001/jama.281.13.1214 Richardson, W.S. et al., 2000. Users’ Guides to the Medical