Ampullary Disconnection during Gastrectomy

Commentary: Ampullary systems.

Diagnosis of Ampullary Cancer

Endoscopic papillectomy has been reported to be the treatment of choice in patients with ampullary adenoma. For ampullary cancer, pancreaticoduodenectomy is the standard treatment. Since neither lymphatic permeation, vascular invasion, nor lymph node metastasis is observed in patients with ampullary cancer limited to the mucosa, endoscopic resection of such tumors can be justified if no ductal ...

Disconnection and Responsibility

Ampullary cancer in chemical workers.

Although a relatively uncommon neoplasm, cancer of the ampulla ofVater does account for over 300 deaths a year in the United States.' Among biliary tract tumours, ampullary cancer is regarded as having a favourable prognosis because the early onset of symptoms, low grade histopathology, and late and infrequent metastases allow the possibility of surgical cure; nevertheless, high operative morta...

Network disconnection problems

Network disconnection problems are defined from a network attacker's point of view. In a centralized network where flows are supplied from a source node to the other nodes, called demand nodes, a network attacker aims to block the supply to demand nodes by destroying edges. As destroying edges incurs expenses, an attacker considers the following three different strategies. The first problem, de...