Benign self-limited sternal tumor, a diagnosis that should be considered

The appearance of tumors in pediatric patients is a cause of great family distress. Specifically, sternal masses are infrequent entities, but they should be known. We present the case of a patient with sudden onset of a sternal tumor. After anamnesis and physical examination, the following complementary examinations were performed: blood analysis, chest X-ray and ultrasound of the lesion. By means of these procedures, the patient was diagnosed with an entity called self-limiting sternal tumor of childhood or SELSTOC (self-limiting sternal tumors of childhood). It is advisable to recognize this tumor since it is a benign process that does not require invasive tests and that allows us to reassure family members of its good prognosis.