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[Lymphoblastic lymphosarcoma of the stomach (author's transl)].

A case of primary lymphoblastic lymphosarcoma of the stomach, concerning a 15 year old boy, is described. The problematic of such cases is discussed in the light of the respective literature together with the own observation. Diagnostic, therapy and course of the case are reported on. It is emphasized that benign pseudolymphoma of the stomach must be considered in the differential diagnosis. The necessity of an optimal cooperation between internal gastroenterology, roentgenology and pathology in such cases is stressed. It is pointed out that the quality of the preoperative diagnosis mainly depends on endoscopy and histology.