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appendix testis

Friday 21 January 2011

Appendix testis; testicular hydatid of Morgagni

Definition: In male, the appendix testis (or testicular hydatid of Morgagni) is a vestigial remnant of the Müllerian duct, present on the upper pole of the testis and attached to the tunica vaginalis. It is present about 90% of the time. It has no physiological function.


- Appendix testis: Remnant of Müllerian duct,attached to tunica albuginea, present in 90% of males.

Nota bene: The hydatid of Morgagni can refer to one of two closely related structures in male and female:

- In male: testicular hydatid of Morgagni (or appendix testis)
- In female: vesicular appendage of epoophoron

  • In female, the vesicular appendage of the epoophoron (hydatid of Morgagni in female) form one or more small pedunculated vesicles in connection with the fimbriae of the uterine tube, or with the broad ligament close to them.


- torsion of the hydatid of Morgagni

See also

- Mullerian ducts
- Mullerian remnants