Robot-assisted azygos lobectomy for adenocarcinoma arising in an azygos lobe.

The azygos lobe is a well-known and well-described anatomical variation of the right lung. Primary lung cancer arising from an azygos lobe, however, is exceedingly rare. Only a handful of cases have been previously reported in the literature. We report the first case with operative demonstration of a primary adenocarcinoma arising from an azygos lobe, which was treated with robot-assisted azygos lobectomy.