Evaluation of herniography in the diagnosis of an occult abdominal wall hernia in symptomatic adults

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Abstract
Outpatient herniography as a means of confirming or refuting the presence of an occult abdominal wall hernia was performed in 50 symptomatic patients, including 13 who had previously undergone hernia repair. Altogether 30 occult hernias were detected in 27 patients, only one of which was considered to be unrelated to the presenting symptoms. On the basis of herniography, 17 patients were spared surgical exploration and, of these 17, 16 obtained a good result. One further patient with a clinically apparent hernia on one side but with contralateral symptoms was spared unnecessary surgery because the contralateral side was radiologically normal. There was one false negative and no false positive examinations. There were three minor complications: two cases of sigmoid colon puncture and one of abdominal wall haemorrhage (all managed conservatively). There were two technical failures. These results support the Scandinavian experience that herniography has a useful role in the management of patients who may have occult hernias as the underlying cause of abdominal wall symptoms.

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