Does use of a metallic colon stent as a bridge to surgery modify the pathology data in patients with colonic obstruction? A case-matched study.

Background: In a recent propensity score study, we established that overall- and disease-free survival were worse after use of a colonic stent (CS) than after emergency surgery for colonic obstruction. The present study sought to explain the association between CS use and poor survival by analyzing pathological specimens.

Methods: From January 1998 to December 2011, all patients with left obstructive colon cancer and having been operated on with curative intent were included in the study.

Is sclerosing angiomatoid nodular transformation (SANT) of the splenic red pulp identical to inflammatory pseudotumour? Report of 16 cases.

Aims: To report 16 cases of sclerosing angiomatoid nodular transformation (SANT) of the splenic red pulp.

Methods And Results: Patients were selected in two phases. An initial group of seven patients was diagnosed with SANT based on the presence of angiomatoid nodules.

The versatility of pentalene coordination to transition metals: a density functional theory investigation.

DFT calculations with full geometry optimization have been carried out on a series of real and hypothetical compounds of the type [CpM(C8H6)], [(CO)3M(C8H6)], [M(C8H6)2], [(CpM)2(C8H6)], [[(CO)3M]2(C8H6)], and [M2(C8H6)2] (M = transition metal). The bonding in all the currently known compounds is rationalized, as well as in the (so far) hypothetical stable complexes. Depending on the electron count and the nature of the metal(s), eta2 (predicted), eta3, eta5, eta8, or intermediate coordination modes can be adopted.