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| Appendix of testis | |
|---|---|
 The righttestis, exposed by laying open thetunica vaginalis (appendix of testis is labeled at right) | |
| Details | |
| Precursor | Paramesonephric duct |
| Artery | Testicular artery |
| Vein | Testicular vein, pampiniform plexus |
| Identifiers | |
| Latin | appendix testis |
| TA98 | A09.3.02.010 |
| TA2 | 3612 |
| FMA | 19846 19846, 19846 |
| Anatomical terminology | |
Theappendix testis (orhydatid of Morgagni) is avestigial remnant of theMüllerian duct, present on the upper pole of thetestis and attached to thetunica vaginalis. It is present about 90% of the time.[citation needed]
The appendix of testis can occasionally become twisted, causing acute one-sided testicular pain and may require surgical excision to achieve relief. One third of patients present with a palpable "blue dot" discoloration on the scrotum. This is nearly diagnostic of this condition. If clinical suspicion is high for the seriousdifferential diagnosis of testicular torsion, a surgical exploration of the scrotum is warranted. Torsion of the appendix of testis occurs at ages 0–15 years, with a mean at 10 years, which is similar to that of testicular torsion.[1]
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