Azygos lobe: exploring the bronchial supply and clinical implications

An azygos lobe is a rare pulmonary variation that typically presents in the superior lobe of the right lung. Mostliterature on azygos lobe cases consists of radiologic X-ray or computed tomography findings, with only a few reports basedon cadaveric dissections. Here, we report a cadaveric dissection of a right azygos lobe identified in a 77-year-old femaleanatomical body donor. The azygos lobe was medially located, superior to the hilum, and measured 8.5 cm in length and 4.0cm in width. The lobe was solely supplied by a subsegmental bronchus from the apical segmental bronchus, which was furtherdivided into two sub-subsegmental bronchial supplies. Prior reports indicate a potential relationship between the azygos lobeand cardiopulmonary pathology or genetic conditions, and further investigation of the bronchial supply may provide insight.