Fetus in fetu: A case report and literature review

Fetus in fetu is a rare condition in which a fetiform calcified mass often is present in the abdomen of its host, a newborn or an infant. We report on a case of a 19-month-old girl whose plain abdominal radiograph, ultrasonog raphy, and computed tomography scan revealed a mass in which the contents f avor a fetus in fetu rather than a teratoma. The noncalcified vertebral col umn invisible on the radiographs was identified by the pathologist; therefo re, the nonvisualization of the vertebral axis on radiography or on compute d tomography scan does not exclude the diagnosis of fetus in fetu.