Dysplastic intestinal-type metaplasia of appendiceal endometriosis: a mimic of low grade appendiceal mucinous neoplasm
1 Department of Anatomic Pathology and Cytology, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
2 Department of Surgery, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
Diagnostic Pathology 2014, 9:39 doi:10.1186/1746-1596-9-39Published: 21 February 2014
We report an example of dysplastic intestinal-type metaplasia involving endometriosis of the appendix in a 45 year old woman. One other example of this phenomenon has been reported. As it occurs within the muscular wall of the appendix, confusion with low grade appendiceal mucinous neoplasm (LAMN) may occur. Evidence supporting the metaplastic nature of the intestinal epithelium is offered. As the initial pathological diagnosis was of invasive cancer with perforation of the appendix treatment consisted of peritonectomy and hyperthermic intraperitoneal chemotherapy (HIPEC).
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