Introduction:

Congenital anomalies of the trachea are a heterogeneous group of alterations that occur during the development and growth of the respiratory system and they are related to the embryonic period. At this stage of development, malformations, which are incompatible with life, may occur.

Objective:

To report a case of tracheal diverticulum.

Case report:

The case of an oncological patient diagnosed with a tracheal diverticulum, also known as a tracheocele, is reported here. The diagnosis was made incidentally. When the patient, in control studies for breast cancer, received a postero-anterior chest X-ray and a nodular lesion was evidenced in the apex of her right lung. She underwent a bronchoscopy and a tracheal diverticulum was diagnosed.

Conclusions:

Tracheal diverticulum is a rare entity that can occur asymptomatically. Its diagnosis can be made by computerized axial tomography or bronchoscopy.

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