Introduction:

respiratory infections in childhood can eventually lead to rare diseases such as Swyer James MacLeod syndrome, which, although it does not have a defined etiology, has been associated with these respiratory antecedents. Reports a prevalence of 0.01% of 17,450 chest X-ray.

Clinical case:

we report the case of a young woman who consults for chest pain without irradiation and that imaging studies show greater radiolucency of the left lung, in addition to this, respiratory function tests point to a restrictive process; leading to the diagnosis of this rare syndrome.

Conclusions:

Swyer James MacLeod syndrome is a clinic-radiological entity that is usually asymptomatic and its diagnosis can be considered an incidental finding.