Abstract
Pseudomyxoma peritonei (PMP) and extragastrointestinal stromal tumors (E-GISTs) are both rare entities. Most of the time, PMP is associated with an appendiceal tumor. An ovarian mucinous tumor can mimic appendiceal metastases. E-GIST is a mesenchymal tumor that can arise from the omentum, retroperitoneum, mesentery, or pleura. We present a case of an 87-year-old woman with mucinous carcinomatosis and acute intestinal occlusion submitted to an emergency laparotomy. She has found to have a borderline mucinous tumor of the ovary from the intestinal type with several lesions of pseudomyxoma peritonei and an E-GIST from the epiploons retrocavity (intermediated risk). In the literature, no relation was found between these two rare tumors. E-GIST was an incidental finding in the context of a mucinous carcinomatosis.
Highlights
Mucinous carcinomatosis or pseudomyxoma peritonei (PMP) is an accumulation of mucinous fluid in the abdominal cavity
Pseudomyxoma peritonei is a clinical condition more frequently originated in a perforated mucinous tumor of the appendix. e accumulation of gross mucinous ascites can lead to adhesions and cause intestinal obstruction
It is important to differentiate a primary tumor from those arising from the appendix and a mucinous tumor from the ovary since they can share some histological aspects [10, 11]
Summary
Mucinous Carcinomatosis: A Rare Association between an Ovarian Tumor and an E-GIST. Pseudomyxoma peritonei (PMP) and extragastrointestinal stromal tumors (E-GISTs) are both rare entities. PMP is associated with an appendiceal tumor. An ovarian mucinous tumor can mimic appendiceal metastases. E-GIST is a mesenchymal tumor that can arise from the omentum, retroperitoneum, mesentery, or pleura. We present a case of an 87-year-old woman with mucinous carcinomatosis and acute intestinal occlusion submitted to an emergency laparotomy. She has found to have a borderline mucinous tumor of the ovary from the intestinal type with several lesions of pseudomyxoma peritonei and an E-GIST from the epiploons retrocavity (intermediated risk). E-GIST was an incidental finding in the context of a mucinous carcinomatosis
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