[Endobronchial Hamartoma Treated with Bronchoscopic Microwave Tissue Coagulation and Electrosurgical Snaring:Report of a Case].

A 35-year-old man had chronic cough and was treated as asthma at local doctor. Since the symptoms was not improved, chest computed tomography( CT) was performed and an approximately 5 mm nodule with calcification was found in the left main bronchi. He was referred to our hospital for treatment. Bronchoscopic examination revealed a polypoid lesion in the membranous part of the left main bronchus. Since transbronchial biopsy revealed no malignant findings, bronchoscopic resection using microwave tissue coagulation and electrosurgical snaring was performed safely under the general anesthesia. The tumor was histologically diagnosed as endobronchial hamartoma.

A Prospective Observational Study on the Tolerability of Transnasal Bronchoscopy With a Surgical Mask for Aerosol Control.

Background As far as we know, there are no reports comparing the safety and cough frequency of transnasal bronchoscopy (TNB) with transoral bronchoscopy (TOB). Methods The subjects were 50 patients who underwent either TNB or TOB and completed the pain score questionnaire between May and November 2020. Complications, pain scores, and cough frequency (times per minute) were compared between the patients with TNB and TOB. A surgical mask was worn over the mouthpiece during the examination. Results Thirty-two and 18 patients underwent TNB and TOB, respectively. Between the two groups, there were no significant differences in examination time and frequency of serious complications. In pain scores, there were no significant differences in terms of anesthesia suffering, several pains during the examination, and availability of re-examination. The TNB group did not feel the prolonged examination time compared to the TOB group (p=0.04). Cough frequency was lower in the TNB group than in the TOB group (0.36 vs 0.73, p=0.027). Moreover, cough frequency in the 25 TNB patients who underwent thin bronchoscopy was significantly lower (0.19 vs 0.73, p<0.01). Conclusions TNB with a surgical mask was well tolerated and safe. Cough frequency in the transnasal thin bronchoscopy was extremely low, suggesting aerosol reduction can be expected.