Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access
Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc
Journal website http://www.gastrores.org

Case Report

Volume 13, Number 3, June 2020, pages 117-120

Benign Multicystic Peritoneal Mesothelioma Presenting as Appendiceal Abscess: A Diagnostic and Therapeutic Challenge

Figures

Figure 1.
Figure 1. Sagittal view of the right iliac fossa mass and pelvic deposits in the cul-du-sac.
Figure 2.
Figure 2. Coronal view of the right iliac fossa mass, demonstarting an enhancing, irregular wall at its inferior aspect, being suggestive of likely appendiceal abscess.
Figure 3.
Figure 3. H&E × 5 magnification: section from the nodular lesion on the serosal aspect of terminal ileum. Low magnification view showing a serosal lesion with multiple cystic spaces of varying sizes. H&E: hematoxylin and eosin.
Figure 4.
Figure 4. H&E × 5 magnification: representative section from the multicystic lesion present on the serosal aspect of the cecum. H&E: hematoxylin and eosin.
Figure 5.
Figure 5. MNF × 20 magnification: cytokeratin MNF116 immunostain highlights the lining cells which are positive.
Figure 6.
Figure 6. CD31 × 100 magnification: the lining cells are negative for CD31 immunostain indicating that these are not endothelial cells thereby excluding a lymphangioma or a hemangioma. The blood vessels in between the cystic spaces are highlighted.
Figure 7.
Figure 7. Calretinin × 200 magnification: the lining cells are positive for calretinin immunostain in keeping with mesothelial origin.