Mesenteric cystic lymphangioma.

Abdominal cystic lymphangioma is a very rare congenital tumor of lymphatic origin. It usually appears in the pediatric age and frequently presents with non-specific symptoms and deceptive signs causing, at times, diagnostic dilemmas. Ultrasonography and computer tomography imaging are considered the diagnostic modalities of choice. Two cases of mesenteric cystic lymphangioma, one presenting as perforated appendicitis and the other as recurrent gastritis, are reported. Infection in the first and volvulus in the second case is behind the mode of presentation. The diagnostic approach and treatment are described, with emphasis on the operative tactic applied for upper jejunal resection. A high index of suspicion, accuracy and repeated physical examination and, most important, the liberal use of ultrasonography in all cases of unclear abdominal illness may contribute considerably to a correct diagnosis and decreased morbidity.