A cyst, especially of the ovary, that contains dark brown altered blood as a result of previous haemorrhage, typically occurring as a manifestation of endometriosis.
Origin
1920s; earliest use found in American Journal of Obstetrics and Gynecology.
Definition of chocolate cyst in US English:
chocolate cyst
noun
Medicine
A cyst, especially of the ovary, that contains dark brown altered blood as a result of previous haemorrhage, typically occurring as a manifestation of endometriosis.
Origin
1920s; earliest use found in American Journal of Obstetrics and Gynecology.