The congenital or acquired variety of esophageal diverticulum is a rare childhood disease. Reported is a case-study which deals with a five year old patient who arrived at our hospital complaining of a constricture at the cricopharyngeal level. A month later he returned to the hospital with dysphasia and regurgitation; the X-rays and endoscopic diagnosis showed stenosis of the esophagus and the presence of an esophageal diverticulum. Esophageal dilatations were carried out until an acceptable esophageal diameter was reached. Later on, the surgical removal of the diverticulum was performed without any complications. The histopathological study showed the congenital nature of the diverticulum. The patient's recovery went well and is currently considered as cured.