Hydatid of Morgagni, also known as Morgagni's cyst or Morgagni's appendix, is a term used in the medical field to describe a small fluid-filled sac that develops in the fallopian tube or the ovary. This benign condition can vary in size and is often found incidentally during routine examinations or surgical procedures. Although not widely known, it is important to be familiar with synonyms for this term. Alternatives like Morgagni's cystic dilatation, hydatid cyst of Morgagni, or Morgagni's tubal cyst are sometimes employed, ensuring proper communication and understanding within the medical community. Expanding one's vocabulary in the field of medicine aids in precise diagnosis, effective treatment, and better patient care.