[Duplication of the gastrointestinal tract: a report of a rare case of mediastinal cyst]. / Duplicazione del tratto gastrointestinale: descrizione di un raro caso di cisti mediastinica.

An unusual case of alimentary tract duplication located in the left anterior mediastinum and observed in a 37-year-old woman is reported. Resection of the lesion through a left thoracotomy approach was resolutive and followed by an excellent long term outcome. Etiology, diagnosis and therapeutic problems as well as differential diagnosis with benign and malignant chest lesions of adult population are briefly discussed.