List of radiologic signs

Last updated January 06, 2026

Radiologic signs are the signs used for diagnosing physiological and pathological conditions in radiologic images. This list includes the names of radiologic signs in alphabetical order.

A

E

Egg on a string sign
Eggshell calcification (lymph node)
Eggshell calcification (breast)
Elephant on a flagpole sign
Empty sella sign
Empty vertebral body sign
Erlenmeyer flask deformity
Eye of the tiger sign

F

Fabella sign
Faceless kidney
Fairbank's changes
Falciform ligament sign
Fallen fragment sign
Fat pad sign
Figure 3 sign
Fishhook ureter
Flat waist sign
Floating teeth
Football sign
Fragment in notch sign
Pear shaped breast

G

I

Incomplete fissure sign
Incomplete rim sign
Inside out sign
Insular ribbon sign
Ivory phalanx sign
Ivory vertebra

J

K

L

Laminated periosteal reaction
Lateral capsular sign
Lateral femoral notch sign
Lead Pipe fracture
Leadpipe colon
Lemon sign
Leontiasis Ossea
Licked candy stick appearance
Light bulb sign
Linguine sign
Loosers zone
Luftsichel sign

M

N

O

S

Saber sheath trachea
Saber shin deformity
Sail sign
Salt and pepper skull
Sandwich vertebra
Sausage digit
Scalloped vertebra
Scimitar sign
Scottie dog sign
Segond fracture
Sentinel loop
Shaggy oesophagus
Shenton's Line
Shepherd's crook deformity
Shmoo sign
Signet ring sign
Silhouette sign
Silver fork deformity
Sister Mary Joseph sign
Small bowel faeces sign
Snowcapping appearance
Snowflake sign
Snowman sign
Snowstorm appearance (lung)
Snowstorm appearance
Snowstorm pattern (breast)
Soap bubbly appearance
Soft tissue rim sign
Sonographic Murphy sign
Southwick angle
Spaghetti sign
Spalding's sign
Spilled teacup sign
Spine sign
Spinnaker sail sign
Split pleura sign
Spoke wheel appearance
Spotted nephrogram
Stack of coins appearance
Steeple sign
Stepladder appearance
Stepladder sign
Stocking glove sign
String of beads sign (GI)
String of beads sign
String of pearls sign
String sign
Stripe sign
Sunburst periosteal reaction
Superior triangle sign
Swan neck deformity
Swiss cheese appearance (cardiac)

U

Upside down stomach sign

W

X

Y

Y Sign
Yinyang sign

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v t e Radiologic signs
Breasts	Acorn cyst sign Teacup sign
Cardiovascular	Aortic unfolding Aortic nipple sign Cœur en sabot Dense artery sign Halo sign High-attenuation crescent sign Water bottle heart
Gastrointestinal	Bowler hat sign Coffee bean sign Colon cut-off sign Comb sign Cupola sign Double bubble Double duct sign Endoexoenteric Football sign Hampton's line Hot quadrate sign Klemm's sign Leadpipe colon Mercedes-Benz sign Mumoli's sign Omental cake Pneumatosis intestinalis Pyloric tit sign Rigler's sign Rigler's triad Sentinel loop Small bowel faeces sign Stepladder sign Whirlpool sign
Musculoskeletal	Absent bowtie sign Anteater nose sign Blade of grass sign Brim sign Celery stalking Cheerio sign Cockade sign Codfish vertebra Corduroy sign Crescent sign Dagger sign Deep lateral femoral notch sign Double posterior cruciate ligament sign Dripping candle wax sign Empty vertebral body sign Fabella sign Fairbank's changes Fat pad sign/Sail sign of the elbow Gilula's lines Growth arrest lines Hilgenreiner's line Honda sign J-shaped sella sign Klein's line Licked candy stick appearance Light bulb sign Napoleon hat sign Notching of the ribs Osteopathia striata Pencil-in-cup sign Perkin's line Polka dot sign Popcorn calcification Sandwich vertebra Scottie dog sign Shiny corner sign Terry-Thomas sign Thurstan Holland sign Trethowan's sign
Neurological	Boomerang sign Dense artery sign Dense MCA sign Dural tail sign Empty sella sign Eye of the tiger sign Face of the giant panda sign Hot nose sign Hotcross bun sign Insular ribbon sign White cerebellum sign
Oncological	Bowl of grapes sign Misty mesentery sign
Respiratory	Air crescent sign Bat wing appearance Black pleura sign Cannonball sign Chang sign Comet tail sign Continuous diaphragm sign Cottage loaf sign Crazy paving Deep sulcus sign Double bronchial wall sign Falciform ligament sign Fleischner sign Golden S sign Ground-glass opacity Hampton hump Hilum overlay sign Holly leaf sign Juxtaphrenic peak sign Kerley lines Knuckle sign Mediastinal shift Palla's sign Peribronchial cuffing Sail sign of the chest Silhouette sign Steeple sign Thumbprint sign Traction bronchiectasis Tree-in-bud sign Westermark sign
Urogenital	Bear paw sign Canga's bead symptom Drooping lily sign Faceless kidney sign Fishhook ureter sign Jackstone calculus Maiden waist deformity Putty kidney
Other	Mickey Mouse sign Rice grain calcification Ring-enhancing lesion Tram track Water lily sign

List of radiologic signs

Contents

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

R

S

T

U

V

W

X

Y