Football sign (pneumoperitoneum)
Giant colonic
diverticulum: radiographic and MDCT characteristics. A 92-year-old man with massive pneumoperitoneum due to left colon perforation. CT surview of the abdomen (a) demonstrating the football sign (arrows) that may mimic giant colonic diverticulum. Axial unenhanced CT image through the upper abdomen (b) shows the massive pneumoperitoneum (P)
The football sign is seen in cases of massive pneumoperitoneum, where the abdominal cavity is outlined by gas from a perforated viscus. The median umbilical ligament and falciform ligament are sometimes included in the description of this sign, as representing the sutures.
Which football is used as the model ball varies according to the nationality of the author. Rugby, Australian rules, and American football all have balls that fit the bill. Soccer is clearly not appropriate.
Pathology
Etiology
It is most frequently seen in children with advanced necrotizing enterocolitis. Other causes include:
- bowel obstruction with secondary perforation
- peptic ulcer disease
- iatrogenic
- endoscopic perforation
See also
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Fußballzeichen (Pneumoperitoneum):
