Question:

Rigler`s sign is a radiological sign visible on what type of radiograph?
1. erect chest radiograph
2. supine chest radiograph
3. erect abdominal radiograph
4. supine abdominal radiograph
5. supine abdominal radiograph with oral contrast





Answer:

The correct answer for the question "Rigler`s sign is a radiological sign visible on what type of radiograph?" is:

4. supine abdominal radiograph



Explanation

Rigler`s sign is a radiological sign of massive pneumoperitoneum visible on a plain supine abdominal radiograph, it can sometimes be mimicked ingested oral contrast creating a pseudo-riglers sign.



From the manuscript:
Postpartum pneumoperitoneum and peritonitis after water birth
Radiology Case. 2009 Apr; 3(4):1-4


This article belongs to the OB/GYN section.




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From the manuscript

Postpartum pneumoperitoneum and peritonitis after water birth

Free full text article: Postpartum pneumoperitoneum and peritonitis after water birth

Abstract
Pneumoperitoneum (the presence of free gas in the peritoneal cavity) usually indicates gastrointestinal perforation with associated peritoneal contamination. We describe the unusual case of a 28-year-old female, who was 7 days postpartum and presented with features of peritonitis that were initially missed despite supporting radiological evidence. The causes of pneumoperitoneum are discussed. In the postpartum period the female genital tract provides an alternative route by which gas can enter the abdominal cavity and cause pneumoperitoneum. In the postpartum period it is important to remember that the clinical signs of peritonism, guarding and rebound tenderness may be diminished or subtle due to abdominal wall laxity.






References



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