case_images: PMC3600218_01
case_images: MRI T2 coronal view: free fluid and inflammatory changes around the appendix (arrow). Gravid uterus.
case_images: CRIM.OBGYN2013-360459.001.jpg
case_images: PMC3600218_01_CRIM.OBGYN2013-360459.001.jpg
case_images: fig1
case_images: This scan showed mild periappendiceal fat stranding, suggestive of early acute appendicitis (Figure 1). 
case_images: Endometriosis H&E x100. A central endometrial gland surrounded by abundant decidualised endometrial stroma.
case_images: CRIM.OBGYN2013-360459.002.jpg
case_images: PMC3600218_01_CRIM.OBGYN2013-360459.002.jpg
case_images: fig2
case_images: There was an abundant decidualised endometriosis (Figure 2) within the wall of the appendix, as confirmed by CK7 and CD10 immunohistochemistry.
case_images: Well-differentiated endocrine tumour (classic carcinoid) H&E x200 Nests and cords of uniform, bland, cohesive tumour cells with round nuclei, stippled chromatin, and eosinophilic cytoplasm.
case_images: CRIM.OBGYN2013-360459.003.jpg
case_images: PMC3600218_01_CRIM.OBGYN2013-360459.003.jpg
case_images: fig3
case_images: In addition, at the tip of the appendix, there was a well-differentiated endocrine tumour (Figure 3) (G1, classic carcinoid) measuring 4.5 mm in maximum dimension, which was largely confined to the muscularis propria, but which very focally invaded (0.2 mm) subserosal tissues, in keeping with stage pT2 tumour.