bull's eye sign

Target sign
bei cerebralen Metastasen Mammakarzinom in der MRT (T1 mit Kontrastmittel). Das Zeichen ist nicht spezifisch.
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
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
- target sign in brain metastases
- Gastrointestinaler Stromatumor
- target sign liver metastases
- plexiform neurofibromas
- target sign of choledocholithiasis
und weiter:
- animal and animal produce inspired signs
- Dünndarminvagination
- ileokolische Invagination
- fat halo sign of inflammatory bowel disease
- pseudokidney of intussusception
- crescent in a doughnut sign
- fat halo sign in abdominal CT imaging
- Koloninvagination
- intussusception on ultrasound
- wheels within wheels sign
- intestinale Invagination


Morbus Crohn
⤙•⤚ bull"s eye sign