Conclusion :
Dermoid peritonitis is a rare condition secondary to sudden rupture
(acute form) or cracking (torpid form) of an ovarian teratoma. This
diagnosis should be considered in the presence of peritonitis of non
explained etiology, especially when the CT scan reveals a mature
teratoma.
It is important to evoke the acute form in a woman of childbearing age,
presenting a picture of severe pelviperitonitis.