• Korean Journal of Bronchoesophagology
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• v.13 no.2
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• pp.65-67
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• 2007

Congenital epiglottic cyst is rare cause of stridor in neonate and if managed inadequately, disaster such as death can occur. Diagnosis of congenital epiglottic cyst includes imaging studies and endoscopy. Fiberoptic or rigid endoscopic examination excludes other causes of stridor in neonate. Complete excision of cyst is treatment of choice under suspension laryngoscopic guidance. Here, we report a case of congenital epiglottic cyst and concomitant laryngomalacia presenting with seizure and respiratory difficulty in neonate with a review of literature.

• Advances in pediatric surgery
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• v.14 no.1
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• pp.94-97
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• 2008

A 19-month-old boy suffered from stridor and dysphagia. He was taking asthma medication for a few months, but symptoms did not improve. After admission, a chest CT showed a posterior mediastinal mass, which compressed the trachea and esophagus. The removed mass via open thoracotomy was a bronchogenic cyst on histopathology. Postoperatively, stridor and dysphagia disappeared. In case of persistent and refractory stridor or dysphagia in children, congenital lesions including bronchogenic cyst need to be ruled out.

• Clinical and Experimental Pediatrics
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• v.51 no.7
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• pp.775-779
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• 2008

Vallecular cyst is an uncommon but potentially dangerous condition causing stridor and has been associated with sudden airway obstruction resulting in death due to its anatomical location in neonates. It may also present with various degrees of feeding problems resulting in failure to thrive. When a vallecular cyst is suspected clinically, endoscopic laryngoscopy is necessary to visualize it. Other conditions leading to neonatal stridor such as laryngomalacia and other laryngotracheal abnormalities should be ruled out. Marsupialization with a $CO_2$ laser is the most effective and safest treatment to prevent recurrence. We report a case of a 1-month-old male infant with a vallecular cyst synchronous with gastroesophageal reflux, and failure to thrive. He was referred to our hospital because of hoarseness, inspiratory stridor, feeding-cyanosis, chest retraction and failure to thrive. Diagnostic workup revealed a cyst at the tongue base, suggesting a vallecular cyst. The cyst was removed by laryngomicrosurgery with $CO_2$ laser. After the surgery, the symptoms improved and the body weight increased steadily. We report a successfully treated case of neonatal vallecular cyst with symptoms of upper respiratory obstruction, gastroesophageal reflux, and failure to thrive.

• Journal of Veterinary Clinics
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• v.14 no.2
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• pp.185-194
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• 1997

This study was conducted to assess the application of spectrograms in the diagnosis of laryngeal paralysis and the arytenoidopexy with bilateral vocal cord excision (laryngofissure) for the relief of laryngeal paralysis. Laryngeal paralysis represented two types of stridor A and B (AN, PN). There were significant differences in Dominant Frequency ( DF, p<0.01), which were $3590{\pm} 209.81 Hz, 7445\{pm}418.54 Hz$, respectively. After arytenoidopexy with bilateral vocal cord excision (laryngofissure), $PaO_{2} levels (100.57{\pm}7.59 mmHg) were more increased than that (86.5 {\pm} 3.34 mmHg)$ of pre-operative dogs.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1981.05a
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• pp.5.2-5
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• 1981

When the laryngeal web is small it rarely produces significant symptomatology. Large webs may produce stridor on both inspration and expiration, as well as hoarseness in various degrees. We have recently experienced with three cases of post-operative anterior glottic web after removal of the papilloma suffering from dyspnea and hoarseness. Layngeal webs with a definite voice problem or stridor should be managed surgically. And so, thyrotomy and a stainless steel keel insertion at the glottic level for repair of laryngeal web was performed. This technique has produced satisfactory result in all cases.

• Journal of Veterinary Clinics
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• v.40 no.2
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• pp.124-129
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• 2023

A 5-year-old neutered male domestic short-haired cat presented with acute dyspnea characterized by open-mouth breathing and stridor for 2 days. Direct visualization via laryngoscopy revealed diffuse laryngeal swelling and severe thickening of the vocal folds bilaterally; thus, the upper respiratory tract was obstructed owing to severe edema. Neutrophil infiltration was found on fine needle aspiration of the larynx cytology, and no discrete mass with polyp or neoplasia was identified on diagnostic imaging. The cat was diagnosed with acute obstructive laryngitis, and a tracheostomy tube was immediately installed. After 17 days of treatment with steroids, doxycycline and azithromycin, the swollen larynx gradually improved, and there was no recurrence of laryngitis or respiratory obstruction. A feline upper respiratory polymerase chain reaction panel revealed Mycoplasma felis infection; however, it could not be determined whether it was pathogenic or opportunistic. Herein, we report a case of obstructive laryngitis in a cat. When respiratory obstruction due to acute laryngitis is identified, a good prognosis is expected with rapid and appropriate treatment.

• Tuberculosis and Respiratory Diseases
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• v.41 no.5
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• pp.552-557
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• 1994

A 41-year-old female was admitted to our hospital for self-audible wheezing sound and dyspnea. On past history, she has been suffered from chest discomfort, and treated recurrently by other hospitals. But, there was no symptomatic improvement. A stridor and mixed wheezing sound was auscultated on whole lung field. PFT revealed fixed type or variable intra- & extra-thoracic air way obstructive pattern. By bronchoscopy & bronchogram, we found web-like structure on the distal trachea. A bronchoplasty was performed and the post-operative PFT showed slight improvement & she had no more complaints.

• Journal of Veterinary Clinics
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• v.30 no.1
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• pp.32-35
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• 2013

Six English Bull dogs from the same dog training camp were referred with main complaints of stridor, gagging and coughing. Diagnostic imaging studies on these dogs revealed hypoplastic trachea with/without bronchopneumonia. The mean age of affected dogs was $4.83{\pm}2.63$ months, while the mean body weight was $9.03{\pm}5.30$ kg. The mean ratio of the tracheal diameter to the thoracic inlet distance (TD/TI) was $0.085{\pm}0.022$ (normally 0.16 or greater), whereas the mean ratio tracheal diameter to the width of the third rib (TD/W3R) was $1.36{\pm}0.36$ (normally 2 or greater). All dogs had marked inspiratory dyspnea with variable degree of coughing. Of 6 dogs, 4 dogs had either bronchitis or bronchopneumonia. Treatment with antibiotics and bronchodilators made improvement on clinical signs on these dogs. Although some dogs still had mild inspiratory dyspnea (especially after exercise or excitement), most dogs live normally.

• Clinical and Experimental Pediatrics
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• v.51 no.6
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• pp.660-664
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• 2008

The term tracheal bronchus refers to an abnormal bronchus that comes directly off of the lateral wall of the trachea (above the carina) and supplies ventilation to the upper lobe. Tracheal bronchi occur almost exclusively on the right trachea and are associated with other congenital anomalies. In addition, tracheai bronchus may be related to other inflammatory conditions with persistent wheezing, such as recurrent pneumonia, chronic bronchitis and bronchiectasis, which is a result of the relatively poor local drainage of the involved bronchi. An infant with recurrent wheezing is likely to be a challenge for a clinician in the evaluation of the etiology of airway obstruction and in the differential diagnosis of wheezy breathing. The authors report a case of an 8-month-old female infant with a ventricular septal defect, who presented with stridor and recurrent respiratory infection and finally was finally diagnosed with a tracheal bronchus using computed tomography and a bronchoscopy. Therefore, tracheal bronchus should be included in the differential diagnosis of any child who presents with chronic or recurrent respiratory tract symptoms such as coughing, wheezing, stridor and recurrent respiratory infection, particularly in children with other congenital deformities.

• Journal of Chest Surgery
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• v.45 no.5
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• pp.338-341
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• 2012

Vascular ring, caused by Kommerell's diverticulum and ligamentum arteriosum, in a patient with right aortic arch and mirror image branching is extremely rare. A 10-month-old boy with coughing and stridor was diagnosed as having tracheo-esophageal stenosis, which is caused by a vascular ring with Kommerell's diverticulum, ligamentum arteriosum, right aortic arch, and mirror image branching. Kommerell's diverticulum was successfully resected via a left thoracotomy. The patient has been free from tracheo-esophageal stenosis for a year after the surgery.