PURPOSE Tracheal restenosis due to excessive granulation tissue around a silicone stent requires repeated bronchoscopic interventions in patients with post-tuberculosis tracheal stenosis (PTTS). The current study was conducted to identify the risk factors for granulation tissue formation after silicone stenting in PTTS patients. MATERIALS AND METHODS A retrospective study was conducted betwee...

PURPOSE Using the conventional method of determining the end-tidal concentration of inhalational anaesthetic for tracheal intubation, a constant end-tidal anaesthetic concentration is maintained for at least 15 min. As sevoflurane has a low tissue/gas partition coefficient, it seems possible in paediatric patients to determine end-tidal concentrations for tracheal intubation more rapidly by usi...

Preoperative bronchoscopic findings of thyroid carcinoma with tracheal invasion were examined and compared with the histopathological findings. Tracheal sleeve resection was performed in 20 cases. The bronchoscopic findings were classified into 5 types: confirmed tumor in the tracheal lumen (5 cases), extramural compression of the trachea plus mucosal change (9 cases), extramural compression of...

Drosophila tracheal terminal branches are plastic and have the capacity to sprout out projections toward oxygen-starved areas, in a process analogous to mammalian angiogenesis. This response involves the upregulation of FGF/Branchless in hypoxic tissues, which binds its receptor Breathless on tracheal cells. Here, we show that extra sprouting depends on the Hypoxia-Inducible Factor (HIF)-alpha ...

A bronchus arising directly from the trachea is an infrequent congenital anomaly which usually represents the displaced origin of a normal bronchus. Rarely, a true supernumerary tracheal bronchus occurs supplying an associated tracheal lobe. The case is described of a patient in whom a supernumerary tracheal bronchus and tracheal lobe was demonstrated by computed tomographic scanning and magnet...

A cross-filed endotracheal intubation is usually applied to maintain single lung ventilation during both open and thoracoscopic tracheal resection and reconstruction. Herein, we report a case of thoracoscopic tracheal resection and reconstruction with interrupted ventilation via transoral endotracheal intubation in a patient with thoracic tracheal adenocarcinoma. Tracheal anastomosis was accomp...

Primary tracheal mucosa-associated lymphoid tissue (MALT) lymphoma is extremely rare. We report a 49-year-old female patient with the complaint of dyspnea. Fiberoptic bronchoscopy showed polypoid, variable-sized and irregular nodules causing narrowing of the tracheal lumen from the proximal trachea to the left main bronchus. Because of severe stenosis in the airway and the severity of symptoms,...

The apical extracellular matrix plays a central role in epithelial tube morphogenesis. In the Drosophila tracheal system, Serpentine (Serp), a secreted chitin deacetylase expressed by the tracheal cells plays a key role in regulating tube length. Here, we show that the fly fat body, which is functionally equivalent to the mammalian liver, also contributes to tracheal morphogenesis. Serp was exp...

OBJECTIVES/HYPOTHESIS Currently available silicone and metallic stents for tracheal stenosis are associated with problems of granulations, mucus trapping, and difficult removals. Our aim was to develop a novel bioabsorbable tracheal stent with mitomycin C (MMC) drug elution to circumvent such problems. STUDY DESIGN A randomized animal study. METHODS Twenty-five rabbits were randomly assigne...