PMC3015910_01
Endoscopic photograph depicting the polypoid appearance of the appendiceal orifice.
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PMC3015910_01_jsls-13-1-92-g02.jpg
F2
The polypoid lesion was visualized and did look suspiciously like an adenoma (Figure 2).
Endoscopic photograph depicting the remaining "stalk" after attempted snare polypectomy.
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PMC3015910_01_jsls-13-1-92-g03.jpg
F3
It was clear that the entire polyp stalk was not removed during the procedure (Figure 3).
PMC3015910_02
Inverted appendiceal stump lined by colonic type mucosa with prominent lymphoid follicles. The underlying muscularis propria appears hypertrophic. (hematoxylin-eosin, original magnification x20).
jsls-13-1-92-g04.jpg
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F4
Histopathologic examination of both cases revealed the reversed pattern of the normal appendix (Figure 4).
Prominent neurogenic component highlighted by anti S-100. (Immunohistochemistry using anti-S-100, original magnification x20).
jsls-13-1-92-g05.jpg
PMC3015910_02_jsls-13-1-92-g05.jpg
F5
The underlying muscularis propria was disorganized and hypertrophic with a prominent neurogenic component (Figure 5).