[Invagination of vermiform appendix in an asymptomatic adult: a case report].

Invagination of the vermiform appendix (appendiceal intussusception) is a very rare disease. Most cases occur in patients under 10 years of age. The clinical presentation of invagination of the vermiform appendix is extremely variable and most cases are symptomatic. The pathogenesis of invagination of appendix is still not clear, but some precipitating factors have been identified. Herein, we report one case of primary invagination of the vermiform appendix in a adult without any symptom. Etiology, precipitating factor, clinical presentation, classification, and diagnosis method are discussed.