What does a positive blue dot sign mean?

The “blue dot sign” is a classic physical exam finding unique to testicular appendix torsion. However, it is often absent in the setting of testicular appendix torsion and can be falsely positive in cases of true testicular torsion.

Is Prehn’s sign positive in torsion?

When checking for the Prehn sign during an examination, the affected hemiscrotum is elevated. This action relieves the pain of epididymitis but exacerbates the pain of torsion (positive Prehn sign).

Can testicular torsion be detected by ultrasound?

Ultrasound can identify testicular torsion, the twisting of the spermatic cord that contains the vessels that supply blood to the testicle. Testicular torsion is caused by abnormally loose attachments of tissues that are formed during fetal development.

What is Prehn’s sign?

Prehn’s sign is an evaluation used to determine the cause of testicular pain. It is performed by lifting the scrotum and assessing the consequent changes in pain. A positive Prehn’s sign indicates relief of pain upon elevation of the scrotum and is associated with epididymitis.

Is Blue Dot sign present in testicular torsion?

The finding of an ipsilateral absent cremasteric reflex is the most accurate sign of testicular torsion. Torsion of the appendix testis is more common in children than testicular torsion and may be diagnosed by the “blue dot sign” (i.e., tender nodule with blue discoloration on the upper pole of the testis).

How can you tell the difference between testicular torsion and Epididymo orchitis?

The scrotum should be examined for a tender spermatic cord, which is suggestive of epididymitis. A high-riding, transversely oriented testis is common with testicular torsion,17 whereas the testis is usually in its normal anatomic location with epididymitis and orchitis.

What is hydatid of morgagni?

The appendix testis is a remnant of the Müllerian duct, meaning that it’s a leftover part of something that previously existed. The appendix testis is also called testicular appendix or hydatid of Morgagni.

How can you tell the difference between testicular torsion and epididymo-orchitis?

How is testicular torsion diagnosed?

Doctors often diagnose testicular torsion with a physical exam of the scrotum, testicles, abdomen and groin. Your doctor might also test your reflexes by lightly rubbing or pinching the inside of your thigh on the affected side. Normally, this causes the testicle to contract.

What can be mistaken for testicular torsion?

Conditions that may mimic testicular torsion, such as torsion of a testicular appendage, epididymitis, trauma, hernia, hydrocele, varicocele and Schönlein-Henoch purpura, generally do not require immediate surgical intervention.

What is the Mesorchium?

Medical Definition of mesorchium : the fold of peritoneum that attaches the testis to the dorsal wall in the fetus.

How do you rule out testicular torsion?