[Pancreatic mucinous cystadenoma with atypical clinical presentation].

We present a 33-year-old patient with atypical clinical course of pancreatic mucinous cystadenoma. The tumor had connection with pancreatic ductal system and led to bleeding into cystic cavity. This contributed to incorrect preoperative diagnosis of post-necrotic cyst.

Hopf bifurcation in addition-shattering kinetics.

In aggregation-fragmentation processes, a steady state is usually reached. This indicates the existence of an attractive fixed point in the underlying infinite system of coupled ordinary differential equations. The next simplest possibility is an asymptotically periodic motion.

Severe complications of chronic cholelithiasis treatment.

Background: Gallstone disease is a burden affecting about 15% percent of the population around the world. The complications of gallstone disease are numerous and many require emergency care. Severe complications are not uncommon and require special attention, as lethal outcome is possible.

Nonlinear analysis of periodic waves in a neural field model.

Various types of brain activity, including motor, visual, and language, are accompanied by the propagation of periodic waves of electric potential in the cortex, possibly providing the synchronization of the epicenters involved in these activities. One example is cortical electrical activity propagating during sleep and described as traveling waves [Massimini et al., J.