Trans-mediastinal Kirschner wire migration treated by video-assisted thoracoscopy.

The use of osteosynthesis material in shoulder and clavicle surgery is common in orthopedic surgery. Although migration is rare, it is widely documented and can lead to serious complications and even death. We present a rare case of trans-mediastinal migration of a Kirschner needle used to fix a clavicle fracture, which fortunately did not injure the mediastinal structures and was resolved favorably by a video-assisted thoracic surgery approach.

Management of a tracheoesophageal fistula in a patient with AIDS.

Despite the high frequency of gastrointestinal complications and opportunistic infections in HIV-1 infected patients, tracheoesophageal (TEF) and bronchoesophageal (BEF) fístulas are rare. Our objective is to comunicate an additional and unusual case of TEF in an HIV-1-infected patient whose immunologic status was good with complete suppression of viral replication, so although uncommon, TEF/BEF of an infectious origen should be considered in AIDS. Endoscopic treatment with tracheal/esophageal stents is not without morbidity and mortality.

Role of endogenous hydrogen sulfide in nerve-evoked relaxation of pig terminal bronchioles.

Hydrogen sulfide (HS) is a gasotransmitter employed for intra- and inter-cellular communication in almost all organ systems. This study investigates the role of endogenous HS in nerve-evoked relaxation of pig terminal bronchioles with 260 μm medium internal lumen diameter. High expression of the HS synthesis enzyme cystathionine γ-lyase (CSE) in the bronchiolar muscle layer and strong CSE-immunoreactivity within nerve fibers distributed along smooth muscle bundles were observed.

Cryoplasty as endovascular treatment in the femoropopliteal region: hemodynamic results and follow-up at one year.

Background: Cryoplasty represents an alternative endovascular approach to current techniques for femoropopliteal occlusive disease treatment. Its theoretical advantage compared to angioplasty is associated with the lower appearance of recoil, dissection, and intimal hyperplasia. The aim of this study is to assess the efficacy of cryoplasty in femoropopliteal disease.