target sign

There are many bull's eye signs, also referred to as target signs:

Gastrointestinal

• intussusception: see target sign of intussusception
• barium studies
  • aphthoid ulcers: earliest lesion seen in Crohn disease 
  • gastric lymphoma with central ulceration
  • gastric adenocarcinoma with central ulceration
  • GIST with central ulceration
  • haematogenous gastric metastases

Hepatobiliary

• choledocholithiasis: see target sign of choledocholithiasis
• hepatic metastases on ultrasound
• periportal fibrosis on ultrasound

Central nervous system

• cerebral metastases
• cerebral abscess

Peripheral nerves

• peripheral plexiform neurofibromas on MRI

Musculoskeletal

• target sign of hematoma on MRI (also called concentric ring sign on MRI)
• deep rectus femoris muscle injury
• island of red bone marrow with central yellow marrow on MRI

Others

• tumors following radiofrequency ablation
• skin lesions in Lyme disease
• COVID-19 pneumonia (pulmonary target sign)

Siehe auch:

• Hirnmetastase
• Morbus Crohn
• Hirnabszess
• Choledocholithiasis
• Invagination
• Target-Zeichen bei Invagination
• Knochenmark
• Lymphom des Magens
• Gastrointestinaler Stromatumor
• target sign in brain metastases
• target sign liver metastases
• target sign of choledocholithiasis
• plexiformes Neurofibrom

und weiter:

• animal and animal produce inspired signs
• ileokolische Invagination
• Dünndarminvagination
• pseudokidney of intussusception
• Koloninvagination
• fat halo sign of inflammatory bowel disease
• fat halo sign in abdominal CT imaging
• crescent in a doughnut sign
• intussusception on ultrasound
• wheels within wheels sign
• intestinale Invagination