Pseudomyxoma peritonei: unusual origin from an ovarian mature cystic teratoma

Area of Science:

• Gastroenterology
• Gynecologic Oncology
• Pathology

Background:

• Pseudomyxoma peritonei (PMP) is a rare condition characterized by mucinous ascites.
• PMP is pathologically classified into disseminated peritoneal adenomucinosis (DPAM) and peritoneal mucinous carcinomatosis.
• DPAM is predominantly associated with appendiceal mucinous adenomas.

Observation:

• This report details an unusual case of PMP.
• The PMP presented as a mature ovarian cystic teratoma.
• The patient's appendix was noted to be normal.

Findings:

• This case represents an exception to the typical appendiceal origin of DPAM.
• Histopathological analysis confirmed the ovarian teratoma as the source of PMP.
• The appendix did not show any neoplastic changes.

Implications:

• This finding expands the known etiologies of PMP.
• It underscores the importance of thorough evaluation for PMP origins beyond the appendix.
• Understanding diverse origins is crucial for accurate diagnosis and tailored treatment strategies.