The physician is still the wonder-worker, the soothsayer, to whose reading of the entrails we resort when hard beset. We may scoff at him in health, but we send for him in pain. The judge, if you fall into his clutches, is still the Themis of the Greeks, announcing mystic dooms. You may not understand his words, but their effects you can be made to feel. Each of us is thus a man of mystery to t...

The weighted spanning tree constraint, or wst-constraint, is defined on an edgeweighted graph G and a value K. It states that G admits a spanning tree with weight at most K [3, 4]. It can be applied to network design problems as well as routing problems, in which it serves as a relaxation. In this work, we assume that we can represent the mandatory and possible edges that can belong to a soluti...

I congratulate Dooms et al 1 on their important study recently published in CHEST (January 2015) that investigated the role of endosonography for mediastinal nodal staging in patients with operable and resectable lung cancer and suspicion of N1 involvement based on CT and PET imaging. To my surprise, the sensitivity of endosonography to detect N2 disease was only 38%, with a negative predictive...