List of radiologic signs explained

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

• Abdominal cocoon sign
• Absent bowtie sign
• Acorn cyst sign
• Air bronchogram
• Air crescent sign
• Angel wing appearance
• Anteater nose sign
• Aortic nipple sign
• Aortic unfolding
• Apple core sign

B

• Bamboo sign
• Banana sign
• Bat wing appearance
• Bear paw sign
• Beveled edge sign
• Bird of prey sign
• Bite sign
• Black pleural line
• Blade of grass sign (also known as Flame sign)
• Blumensaat's line
• Bohler's angle
• Bone-within-a-bone appearance
• Boomerang sign
• Bow tie appearance
• Bowler hat sign
• Brim sign
• Bucket handle tear
• Bulging fissure sign
• Butterfly vertebra

C

• C sign
• Canga's bead sign
• Cannonball metastases
• Cardiothoracic ratio
• Carman meniscus sign
• Celery stalking
• Cervicothoracic sign
• Chang sign
• Cheerio sign
• Cluster of grapes sign
• Cobb angle
• Cobblestone appearance
• Cobra head sign
• Cockade image
• Codfish vertebra
• Codman's triangle
• Coffee bean sign
• Coin lesion
• Collar button ulcer
• Colon cut-off sign
• Comb sign
• Comet sign
• Comet tail sign (CT thorax)
• Coned epiphyses
• Continuous diaphragm sign
• Copula sign
• Cord sign
• Corduroy sign
• Corkscrew oesophagus
• Corkscrew sign
• Cortical ring sign
• Cottage loaf sign
• Cotton wool appearance
• Crazy paving sign
• Crescent sign
• Crowded carpal sign
• Cupola sign
• Cœur en sabot

D

• Dagger sign
• Deep lateral femoral notch sign
• Deep sulcus sign
• Dense artery sign
• Dense hilum sign
• Dense MCA sign
• Dense metaphyseal bands
• Dense triangle sign
• Double bronchial wall sign
• Double bubble sign
• Double decidual sign
• Double density sign
• Double duct sign
• Double posterior cruciate ligament Sign
• Double track sign
• Doughnut sign
• Draping aorta sign
• Dripping candle wax sign
• Drooping lily sign
• Drooping shoulder sign

E

• Egg on a string sign
• Eggshell calcification
• 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

• Garland's triad
• Ghost vertebrae
• Gilula's lines
• Gloved finger sign
• Goblet sign
• Golden's S sign
• Golf ball on a tree sign
• Gooseneck sign
• Ground-glass opacity
• Growth arrest lines
• Gullwing appearance

H

• H-shaped vertebrae
• Haglund's deformity
• Hair-on-end appearance
• Half moon sign
• Halo sign
• Hamburger bun sign
• Hampton's hump
• Hampton's line
• Harris lines
• Hatchet head
• Head cheese sign
• Hidebound appearance
• High-attenuation crescent sign
• Hilgenreiner's line
• Hill Sach's deformity
• Hilum convergence sign
• Hilum overlay sign
• Holly Leaf sign
• Honda sign
• Honeycombing
• Hot nose sign
• Hot quadrate sign
• Hotcross bun sign
• Hurricane sign

I

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

J

• J shaped sella
• Jackstone calculus
• Juxtaphrenic peak sign

K

• Kerley lines
• Keyhole sign (breast)
• Keyhole sign
• Kidney bean sign
• Klein's line
• Klemm's sign
• Knuckle sign

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

• MacEwan sign
• Maiden waist deformity
• Mass effect
• Mathe's sign
• Mediastinal shift
• Mercedes Benz sign
• Mickey Mouse ears
• Mickey Mouse pelvis
• Midline shift (radiology)
• Misty mesentery sign
• Modic changes
• Molar tooth sign
• Moulage sign
• Mumoli's sign

N

• Naked facet sign
• Napoleon hat sign
• Nubbin sign
• Nutcracker fracture

O

• Oil droplet appearance
• Omental cake
• Onion skin periosteal reaction
• Osteopathia striata
• Osteoporosis circumscripta

P

• Pad sign
• Palla's sign
• Pancake kidney
• Pancake vertebra
• Panda sign
• Pauwel's angle
• Pawnbroker's sign
• Pearshaped bladder
• Pedicle sign
• Pencil Pointing
• Pencil-in-cup sign
• Peribronchial cuffing
• Pericardial fat pad sign
• Perkin's line
• Phantom calyx sign
• Picket fence appearance
• Picture framing (radiology)
• Pie-in-the-sky sign
• Piece of Pie sign
• Playboy sign
• Pneumatosis intestinalis
• Pneumoarthrogram sign
• Polka dot sign
• Popcorn appearance
• Popcorn calcification
• Pseudo Rigler's sign
• Pseudofracture
• Puckered panniculus sign
• Pulmonary consolidation
• Putty kidney
• Pyloric Tit sign

R

• Rachitic rosary
• Rarefying osteitis
• Rat bite sign
• Rat tail sign
• Reverse 3 sign
• Reverse hamburger bun sign
• Reverse pulmonary edema
• Reversed halo sign
• Rib notching
• Ribbon ribs
• Rice grain calcification
• Rigler's sign
• Ring around artery sign
• Ring enhancing lesion
• Ring sign
• Rod-like calcifications
• Rolled edge sign
• Romanus lesion
• Rugger jersey spine

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
• 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
• Swan neck deformity
• Swiss cheese appearance (cardiac)

T

• Talar beak
• Target calcification
• Target sign (Gastrointestinal system)
• Target sign (Ultrasound)
• Teacup calcification (breast)
• Teardrop sign
• Terry Thomas Sign
• Threads and streaks sign
• Three sign (cardiac)
• Thumb sign
• Thumbprint sign
• Thurstan Holland sign
• Thymic sail sign
• Tooth sign
• Tram track sign
• Tree in bud sign
• Trethowan's sign
• Trolley track sign
• Trough sign
• Tubular artery sign
• Tulip bulb aorta
• Tumbling bullet sign

U

• Upside down stomach sign

V

• Vacuum disk sign
• Vacuum joint
• Vanishing tumor

W

• Water bottle heart
• Water lily sign
• Westermark sign
• Whirlpool sign
• White cerebellum sign
• Wilkinson's syndrome
• Wimberger's ring sign
• Wimberger's sign

Y

• Y Sign
• Yinyang sign