Background: Appendiceal inversion with neoplasia in adults is an extremely rare event with a reported incidence of < 0.01%. Preoperative diagnosis is very important for surgical treatment; however, it is very difficult to be exact. Case presentation: The patient was a 60-year-old woman with complaints of intermittent abdominal pain. Computed tomography and colonoscopy revealed a cecal mass, which was diagnosed as a tubulovillous adenoma in the preoperative colonoscopic biopsy. At surgery, the appendix was found to be completely inverted into the cecum. The cecum was partially resected, and surgical pathology examination confirmed a tubulovillous adenoma of the appendix with local high-grade intraepithelial neoplasia. Conclusions: Although preoperative diagnosis of appendiceal inversion with neoplasia may be often difficult due to its non-specific symptoms, clinicians should consider this disease entity when they encounter an intraluminal protruding cecal mass without visualization of the normal appendix on CT and colonoscopy.
CITATION STYLE
Liu, X., Liu, G., Liu, Y., Zhou, H., Yu, L., Xu, Y., … Zhang, J. (2019). Complete appendiceal inversion with local high-grade intraepithelial neoplasia in an adult female: A case report. BMC Surgery, 19(1). https://doi.org/10.1186/s12893-019-0632-3
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