Bronchoscopic view of right mainstem bronchus

The RMB is short with an average length of 2.5 cm (line), and leads directly to the RBI. The RUL is visible at 3 to 4 o'clock.

RMB: right mainstem bronchus; LMB: left mainstem bronchus; RBI: right bronchus intermedius; RUL: right upper lobe bronchus.

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