Diagnostic finding
Thumbprint sign
A radiologic sign characterized by rounded, thumb-like soft-tissue projections caused by markedly thickened, edematous mucosal folds.
Causes
Gastrointestinal causes
Severe colitis
Ulcerative colitis flare
Infectious colitis
Ischemic colitis
Crohn’s disease
Intestinal ischemia/infarction
Acute epiglottitis (swollen epiglottis “thumb sign” on lateral neck radiograph)
Also known as: Thumb sign, Thumbprinting
Referencing diagnoses
- Acute mesenteric ischemia
- Epiglottitis
- Ischemic colitis
- Necrotizing enterocolitis
- Neutropenic enterocolitis
Note: Lists existing diagnoses in Diagnotize only.