Question Title: Disappearance of Testicle

According to the history you have given your son has had a normal examination previously. The disappearance or decrease in size can potentially be explained by a blood flow problem . This can be caused by what we refer to as torsion. This is usually due to a twisting of the testicle which cuts off the blood supply which lead to testicular pain and swelling. Sometimes this process is only partial and intermittent, and its symptoms are also intermittent and less severe. This is usually a medical emergency , which if left untreated could lead to loss of the testicle. If you recall any such history, it would explain your doctor's findings and explanation. Some patients have a retractile testicle which is due to an overactive reflex (cremasteric reflex). This is most common between the ages of 1to 7 yrs. of age. A true undescended testicle is the other possibility, however, based on your history your son has had a normal exam in the past which precludes an undescended testicle. Regardless,your son has to be seen and evaluated by a urologist. Depending on the specifics of the history and physical examination the options of bringing the testicle down versus removal of the testicle would be discussed with you. Often every attempt is made to preserve the testicle. You will know more when you will meet your urologist. Please be rest assured that your son will do well regardless of whichever course that you would have to choose.

This information is provided for general medical educational purposes only. Please consult your physician for diagnostic and treatment options pertaining to your specific medical condition. More individualized care is available at the Henry Ford Hospital and its satellites (1 800 653-6568).

Sincerely,
HFHS M.D.-BE
*keyword: undescended testicle