Diagnostic finding

Donut sign

A medical imaging term describing a circular, ring-like structure with a center that appears empty or dark.

Causes

  • Gastrointestinal disorders

    • Intussusception

    • Appendicitis

    • Inflammatory bowel disease (IBD)

  • Central nervous system disorders

    • Brain abscess

    • Encephalitis

    • Brain tumor

  • Pulmonary disorders

    • Lymphadenopathy

  • Bone disorders

    • Bone cyst

    • Bone tumor

    • Osteonecrosis

Also known as: Bull's-eye sign, Doughnut sign, Target sign

Referencing diagnoses

Note: Lists existing diagnoses in Diagnotize only.