This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
'Thumbprint' sign seen in – 
Select and explain. 
A. Candida, B. Asp ergillus, C. Thrrmomyces, D. Epiglotitis
D: Epiglotitis
Answer: D: Epiglotitis 
Explanation: Thumbprint sign is a finding on lateral cervical spine radiograph that suggest diagnosis of epiglottitis. This appearance is due to thickening of aryepiglottic folds, which causes it to appear more radiopaque, resembling the distal thumb.

Also know

Thumbprint sign is also seen in the colon in following diseases :- (1) Ulcerative colitis; (2) Ischemic colitis; (3) Crohn's colitis; (4) Pseudomembranous colitis; (5) Amebic colitis; (6) Schistosomiasis; (7) Lymphoma; (8) Metastasis; Pneumatosis coli.