Oscillatory Activity in the Infant Brain and the Representation of Small Numbers.

Gamma-band oscillatory activity (GBA) is an established neural signature of sustained occluded object representation in infants and adults. However, it is not yet known whether the magnitude of GBA in the infant brain reflects the quantity of occluded items held in memory. To examine this, we compared GBA of 6-8 month-old infants during occlusion periods after the representation of two objects vs.

Squamoid cyst of pancreatic ducts: a challenging differential diagnosis among benign pancreatic cysts.

Context: In the last years, cystic pancreatic lesions are often detected when clinically silent, because of the wider use of diagnostic imaging techniques. First described by Othman in 2007, "squamoid cyst of pancreatic ducts" represents a cystic dilation of ducts, lined by non-keratinized squamous epithelium. We report the first case of squamoid cyst of pancreatic ducts in Italy.

Calretinin, β-tubulin immunohistochemistry, and submucosal nerve trunks morphology in Hirschsprung disease: possible applications in clinical practice.

Objectives: The aim of this study was to investigate calretinin and β-tubulin immunohistochemical expression together with submucosal nerve trunks morphology in differently innervated segments of Hirschsprung disease (HD) and total colonic aganglionosis (TCA).

Methods: A total of 25 cases (22 HD, 3 TCA) and 18 controls were processed for calretinin and β-tubulin immunohistochemistry. Sections representative of distal aganglionic, transition, and proximal ganglionic segments were evaluated by a visual grading score; β-tubulin was evaluated also by image analysis.