Football sign

The football sign is named after the American football, shown here.

In radiology, the football laces sign is a sign indicative of air in the abdominal cavity seen on supine radiographs of the abdomen. It appears as a large oval radiolucency reminiscent of an American football.^[1] The football sign is most frequently seen in infants with spontaneous or iatrogenic gastric perforation causing pneumoperitoneum. It is also seen in bowel obstruction with secondary perforation, as in Hirschprung disease, midgut volvulus, meconium ileus and intestinal atresia. Iatrogenic causes like endoscopic perforation may also give football sign.

References

↑ Rampton JW (April 2004). "The football sign". Radiology. 231 (1): 81–2. doi:10.1148/radiol.2311011290. PMID 14990817.

Symptoms and signs: digestive system and abdomen (R10–R19, 787,789)

Upper	Nausea Vomiting Heartburn Aerophagia Dysphagia oropharyngeal esophageal Odynophagia Halitosis Xerostomia Hypersalivation Burping Wet burp

Defaecation	Flatulence Fecal incontinence Encopresis Blood: Fecal occult blood Rectal tenesmus Constipation Obstructed defecation Diarrhea Rectal discharge Football sign Psoas sign Obturator sign Rovsing's sign Hamburger sign Heel tap sign Aure-Rozanova's sign Dunphy sign Alder's sign Lockwood's sign Rosenstein's sign

Abdomen	Abdominal pain Acute abdomen Colic Baby colic Abdominal guarding Rebound tenderness Abdominal distension Bloating Ascites Tympanites Shifting dullness Bulging flanks Fluid wave test Abdominal mass Hepatosplenomegaly Hepatomegaly Splenomegaly Jaundice Mallet-Guy sign Puddle sign

Radiologic signs

Cardiovascular	Aortic unfolding Dense artery sign Halo sign

Respiratory	Air crescent sign Deep sulcus sign Golden S sign Hampton hump Kerley lines Peribronchial cuffing Sail sign of the chest Silhouette sign Steeple sign Thumbprint sign Traction bronchiectasis Tree-in-bud sign Westermark sign

Urogenital	Canga's bead symptom

Musculoskeletal	Crescent sign Fabella sign Fat pad sign Osteopathia striata Sail sign of the elbow

Gastrointestinal	Cupola sign Double bubble Endoexoenteric Football sign Hampton's line Hot quadrate sign Mumoli's sign Omental cake Pneumatosis intestinalis Rigler's sign Sentinel loop

Neurological	Hot cross buns Hyperdense middle cerebral artery

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