RESUMEN
The autors report on 30 cases of abdominal localisation of N.H.L. seen between 1981 and 1984. The diagnosis is easy if we consider that this affection is frequent in our climate and it's clinic manifestations is much more calling up than it's evolution is rapid and that these children consult late in the course of the disease. Sonography is a fast and efficient examination. The specific and multifocal patterns of the lesions aids to the diagnosis. Sonography allows an extension balance and follow up of the evolution when treatment is administered. Percutaneous punction of the mass guided by sonography may give an anatomo pathologic confirmation of the lesions. When sonography is not performant, other explorations, like CT, barium studies and lymphography, may be needed