In the last 20 years the increasing use of Computed Tomography, Magnetic Resonance and Ultrasonography has decreased the role of conventional radiology in the assessment of acute abdominal diseases. Nevertheless, in clinical practice, serial plain abdominal film remains the first diagnostic procedure, providing important diagnostic information, extremely useful in the emergency setting, and still of value if correctly performed and carefully interpreted. In this paper the current fields of application of serial abdominal plain film are presented, starting from a correct technique of performance and some basic knowledge of its interpretation.
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