Extralobar pulmonary sequestration (EPS) is a rather uncommon congenit
al anomaly. Most patients are diagnosed in their early life or during
the first decade because of the early appearance of symptoms, includin
g feeding difficulty, cyanosis, and dyspnea, or because of symptoms ar
ising from the associated congenital abnormalities. Extralobar pulmona
ry sequestration is more often found between the lower lobe and the di
aphragm and is usually associated with other congenital abnormalities,
but the case reported herein differs in these respects. In this repor
t, an incidental finding of EPS is described in a 30-year-old Chinese
man, where EPS presents as an anterior mediastinal mass roentgenograph
ically. The mass was attached to the right suprahilar region by a fibr
ovascular pedicle which contained a small elastic artery, veins, and n
erve bundles.