“…The most common location is the neck region (75%), especially in the posterior triangle and in the back cervical cavity, but it can be also found in the axillary region (20%) and infrequently in the retroperitoneum, mesentery, omentum, colon, pelvis, groin, bone, skin, scrotum, and spleen;[ 8 ] Only 1% of cystic lymphangiomas have mediastinal localization and the most frequent locations are the anterior and upper mediastinum (50-60%), while the middle and posterior mediastinum occur more rarely (20%). In literature, they are described cases of cystic lymphangioma of the mediastinum localized in the right paratracheal, paracardiac,[ 9 ] anterior,[ 10 ] and posterior mediastinal[ 11 12 13 14 ] regions.…”