Mesenteric cystic lymphangiomas are rare benign lesion of lymphatic system occurring in children. They are common in males with a median age of presentation of 2 years. It can either be asymptomatic or present as acute abdomen when the mass produces intestinal volvulus. It is often confused with mesenteric cyst both clinically and radiologically. The true nature of lesion is revealed on histopathological examination. We report such a case in a 3 year old boy who presented with complaints of abdominal pain and distension, which on evaluation thought to be mesenteric cyst which was excised and turned out to be a cystic lymphangioma in histopathological examination. Establishing the lymphatic nature is also important owing to the development of targeted therapy for aggressive and recurrent lesions. Immunohistochemistry, hence, hold an important role in this characterization and is expected to rise in significance in the future.