Meckel's diverticulum complicating gallstone ileus-a surgical odyssey: case report and literature review

Meckel's diverticulum is a common anomaly of the gastrointestinal tract, often presenting with various complications. Here, we present a case of a 50-year-old female with a history of hysterectomy and cesarean sections, who presented with symptoms consistent with gallstone ileus. Upon investigation, a Meckel's diverticulum with an associated cholecystoduodenal fistula was identified. Surgical intervention involved resection of the affected intestinal segment and anastomosis, without additional intervention targeting the gallbladder or fistula repair. A systematic review revealed four reported cases of Meckel's diverticulum complicating gallstone ileus in the literature. Our case underscores the importance of considering Meckel's diverticulum in the differential diagnosis of gallstone ileus and highlights the efficacy of a tailored surgical approach.

Injectivity of the Dirichlet-to-Neumann Functional and the Schwarzian Derivative

In this article, we show the relation between the Schwartz kernels of the Dirichlet-to-Neumann operators associated to the metrics g0 and h = F* (e²φ g0) on the circular annulus A R, and the Schwarzian Derivative of the argument function f of the restriction of the diffeomorphism F to the boundary of A R.

Neste artigo mostramos a relação entre os núcleos de Schwartz dos operadores Dirichlet-to-Neumann associados à métrica g0 e h = F* (e²φ g0), no anel circular A R, e a Derivada Schwarziana da função argumento f, da restrição do difeomorfismo F à fronteira de A R.