Ramakrishnan, M R Retained barium enema balloon tip: proposed treatment by percutaneous needle puncture. [electronic resource] - AJR. American journal of roentgenology May 1992 - 1770 p. digital Publication Type: Comment; Letter ISSN: 0361-803X Standard No.: 10.2214/ajr.158.5.1566696 doi Subjects--Topical Terms: Barium SulfateEnema--instrumentationHumans