Gliomatosis peritonei and teratomatous implant with carcinomatous transformation presenting 54 years following oophorectomy for dermoid cyst.

ABSTRACT

BACKGROUND: Gliomatosis peritonei is a rare condition associated with ovarian teratomas in which benign glial implants are identified on the peritoneal surfaces of the abdomen. The implants have been identified at initial surgery and at second-look laparotomy. CASE Here, we present a case of an 82-year-old female who was diagnosed with gliomatosis peritonei 54 years after her initial surgery for an ovarian dermoid tumor. A separate teratomatous implant containing focally invasive adenocarcinoma was also present. CONCLUSION: This is by far the longest interval between initial diagnosis and identification of glial implants reported. Additionally, the presence of a separate malignant teratomatous implant suggests that teratomatous implants may retain malignant potential, in contrast to implants composed of purely benign glial tissue.