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- W2073997154 abstract "Bridging bronchus (BB) is one of the rarely seen congenital anomalies. BB is generally associated with other congenital anomalies, especially vascular anomalies. Congenital tracheal stenosis (CTS) is also seen rarely. Here we present a patient with a stenotic BB and bronchus suis anomaly. A 10-month-old boy was admitted to the hospital with the complaints of respiratory distress and cough. He had wheezing since he was 2 months old. He had been given antimicrobial and bronchodilator treatment several times for bronchiolitis, but the symptoms had recurred frequently. After medical treatment, his complaints were improved but recurred on his 10th day of hospitalization in our hospital. Chest radiography and thorax tomography revealed an abnormal branching and stenosis of the bronchial tree (Figure 1, A-C). Three-dimensional computed tomographic (CT) imaging was performed, and it demonstrated that there was a carina formed by a right upper lobe bronchus (bronchus suis) and a stenotic BB (Figure 1, D). The stenotic BB connected with the residual carina formed by the left main bronchus and the remainder of the right main bronchus (right middle lobe and lower lobe bronchus). It was almost 15 mm long. Thorax magnetic resonance (MR) and MR angiography revealed no vascular anomaly and confirmed BB. The results of abdominal ultrasonography were normal. Echocardiography showed a small secundum-type atrial septal defect (3.2 mm in diameter). After achievement of general anesthesia, rigid bronchoscopy was performed. The stenotic BB was almost 2 mm in diameter, and an optic device could not be passed through the BB. Posterolateral thoracotomy was performed. Cardiopulmonary bypass (CPB) was not needed because of the absence of additional vascular anomalies. The stenotic BB was divided, and the left main bronchus was intubated from the operation field (Figure 2, A and B). The stenotic BB was excised, and the junction of the trachea and the right upper lobe bronchus was anastomosed to the residual carina (Figure 2, C). The intercostal muscle flap was used for buttressing the anastomosis. In the preoperative or postoperative period tracheostomy was not needed. Pathologic examination of the excised stenotic trachea revealed O-shaped tracheal rings. Ventilatory treatment was not needed. No complication was observed in the postoperative period. The patient was discharged from the hospital on his eighth postoperative day. He is in his 6-month follow-up period without any symptoms. Gonzalez-Crussi and colleagues1Gonzalez-Crussi F. Padilla L.M. Miller J.K. Grosfeld J.L. “Bridging bronchus” a previously undescribed airway anomaly.Am J Dis Child. 1976; 130: 1015-1018PubMed Google Scholar first described BB as a right lower lobe bronchus (often with a middle lobe bronchus) arising from the left main bronchus and bridging the lower mediastinum. However, Grillo and associates2Grillo H.C. Tracheoplasty for congenital tracheal stenosis. Repair of congenital tracheal lesions.in: Grillo H.C. Surgery of the trachea and bronchi. BC Decker Inc, Hamilton2004: 665-674Google Scholar, 3Grillo H.C. Wright C.D. Vlahakes G.J. MacGilivray T.E. Management of congenital tracheal stenosis by means of slide tracheoplasty or resection and reconstruction, with long-term follow-up of growth after slide tracheoplasty.J Thorac Cardiovasc Surg. 2002; 123: 145-152Abstract Full Text Full Text PDF PubMed Scopus (170) Google Scholar described the BB differently. They named the BB as the bronchus between the trachea and the residual carina between the right and left main bronchus. They reported 2 patients with stenotic BB very similar to that seen in our patient.2Grillo H.C. Tracheoplasty for congenital tracheal stenosis. Repair of congenital tracheal lesions.in: Grillo H.C. Surgery of the trachea and bronchi. BC Decker Inc, Hamilton2004: 665-674Google Scholar, 3Grillo H.C. Wright C.D. Vlahakes G.J. MacGilivray T.E. Management of congenital tracheal stenosis by means of slide tracheoplasty or resection and reconstruction, with long-term follow-up of growth after slide tracheoplasty.J Thorac Cardiovasc Surg. 2002; 123: 145-152Abstract Full Text Full Text PDF PubMed Scopus (170) Google Scholar That is why we chose Grillo’s definition. BB is extremely rare. This anomaly is associated with an anomalous right upper lobe bronchus (bronchus suis). Rishavy and coworkers4Rishavy T.J. Goretsky M.J. Langenburg S.E. Klein M.D. Anterior bridging bronchus.Pediatr Pulmonol. 2003; 35: 70-72Crossref PubMed Scopus (17) Google Scholar reported that there were only 8 cases until 2001 in the English-language literature. BB might be associated with stenosis or bronchomalasia and cardiac or vascular anomalies. In our patient an atrial septal defect was detected. BB without cardiovascular pathology might be asymptomatic, but CTS can cause varying degrees of respiratory distress, wheezing, coughing, stridor, apnea, cyanosis, and life-threatening airway obstruction. Persistent atelectasis and recurrent pneumonia can be seen. Chest radiographic examinations are usually not helpful in congenital tracheobronchial anomalies. Spiral CT-MPR (multiplanar reconstruction) provides a good anatomic delineation of the airway in those cases. According to our experience, bronchoscopy and CT-MPR are enough to determine the anomaly in the tracheobronchial tree. Bronchography is not needed. MR and echocardiography are usually sufficient for evaluation of additional cardiovascular anomalies. CPB might be needed if there are additional cardiac anomalies. Some authors recommend CPB in all CTS corrections, but the conduct of the operation is simplified by avoiding CPB.2Grillo H.C. Tracheoplasty for congenital tracheal stenosis. Repair of congenital tracheal lesions.in: Grillo H.C. Surgery of the trachea and bronchi. BC Decker Inc, Hamilton2004: 665-674Google Scholar In conclusion, BB with or without stenosis should be kept in mind in infants and children with respiratory symptoms that cannot be healed with proper medical treatment. Spiral CT-MPR is very useful for determining the morphologic anomaly of the tracheobronchial tree." @default.
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- W2073997154 title "Stenotic bridging bronchus: A very rare entity" @default.
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