[Askin tumor. Consideration on a case].

The authors present the case of a male patient of 9 years of age admitted for thoracic pain. The clinical evaluation and the imaging exams (chest X-ray, ultrasonography exam of the chest and thoracic computer tomography) reveal a tumor of the thoracic wall. The child was referred to the surgery. It was revealed an invasive tumoral mass of bone origin. At the pathological exam the tumor presented an aspect of Askin tumor. The authors discuss the theoretical aspects correlated with the diagnosis of Askin tumor, based on the presented case.