“…In view of their origin from clements of the primitive foregut at some stage in the development of the respiratory tract, bronchogenic cysts are co mmonly found in the mediastinum in relation to the trachea and major bronchi (8,9,2 1). Others have been located in the lung parench yma (3), and a few "ectopic" ones have been described in relati on to the esophagus (2 7). the pericardium (20) , the diaphragm (4), the vertebral column (28) and the skin (10,12).…”