Ө.Энхжаргал¹, Ч.Энхтуул², Б.Уранчимэг²

¹ЭХЭМҮТ,  ²Эмгэг судлалын үндэсний төв

We present a case of benign tumor of mesenteric lymph nodes in 3 months old boy who was treated at the National Center for Maternal and Child Health in June, 2012. The patient was admitted to the center with large abdomen. Palpation of the abdomen revealed ill-defined large soft mass. His skin on neck, chest, foot, arm and external genitalia had pigmented spots. Hystological examination of the abdominal mass demonstrated that lymphangioma was completely disseminated to whole stratum of the mesen- tery.