Animal and animal produce inspired signs
Updates to Article Attributes
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was changed:
Animal and animal produce inspired signs may sound a little silly, but the radiology literature is replete with such signs, some more fanciful than others.
Fish and seafood
- endosteal scalloping: medullary cavity masses, e.g. multiple myeloma
- fish vertebra (also known as codfish vertebra): biconcave vertebrae as seen in osteoporosis
- fishtail deformity of the elbow: due to abnormal trochlear ossification following a distal humeral fracture in childhood
-
vertebral scalloping: may be anterior or posterior border -
endosteal scalloping: medullary cavity masses, e.g. multiple myeloma - lobster claw sign: of papillary necrosis
- manta ray sign: of bladder exstrophy
- vertebral scalloping: may be anterior or posterior border
Birds
-
eggshell calcification:silicosisand occasionallysarcoidosis -
swan neck deformity: ofrheumatoid arthritis - bird-beak sign: achalasia (also known as rat tail sign)
- beak sign: of arterial dissection or of sigmoid volvulus
- eggshell calcification: silicosis and occasionally sarcoidosis
- gull wing appearance: erosive osteoarthritis
- hummingbird sign or penguin sign
- swan neck deformity: of rheumatoid arthritis
thewinking owl sign
Domesticated and wild animals
- anteater nose sign: calcaneonavicular coalition
-
bat's wing
- pulmonary opacities, e.g. in alveolar oedema
- 4th ventricle (Joubert anomaly and related syndromes)
- bear's paw sign: xanthogranulomatous pyelonephritis
-
bull's eye: evoked in the mind's eye by many
of thesea pathology -
dural tail:
struvite renal calculiof meningioma and several other dura-based lesions - eye of tiger sign: classical of Hallervorden-Spatz syndrome
-
feline oesophagus: horizontal striations seen on barium swallows as a variant of normal
. - hidebound sign: gastrointestinal scleroderma
-
pleuraljoint mouse: intra-articular loose body resulting from osteochonritisdissecans - moose head appearance: appearance of lateral horns on coronal sections in corpus callosal dysgenesis
-
panda sign
- of the midbrain: Wilson disease
- of sarcoidosis
- pleural mouse
- rat bite erosions of gout
- rat tail sign: of arterial dissection or of achalasia (also known as bird-beak sign)
-
scotty dog sign
ofgout -
bat's wing:pulmonary opacitiesand4th ventricle(Joubert anomalyand related syndromes) -
staghorn calculus:
calcaneonavicular coalitionstruvite renal calculi - tigroid pattern or leopard skin sign
Insects
- butterfly fracture
- butterfly glioma: glioma crossing midline to contralateral hemisphere
- butterfly shape of the grey matter of the spinal cord
- butterfly vertebra
Reptiles
- cobra head sign: of ureterocele
- snake-eye appearance: pathology of anterior horns of cervical grey matter
- snake eyes: appearance of facial canal in the petrous temporal bone
Insects
-
butterfly glioma: nothing "oooh... isn't it pretty" about this one butterfly shape of the grey matter of the spinal cordbutterfly fracturebutterfly vertebra
Reptiles
Mythical creatures
- cyclops lesion: usually post-ACL repair
-
medusa head
:- of a developmental venous anomaly (DVA)
- also a sign of severe portal hypertension (i.e. caput medusae)
Processed animal product containing foods
- cervical hamburger sign: normal cervical facet joints on axial CT
-
honeycomb lung: UIP
/pulmonary/pulmonary fibrosis mesenteric hamburger sign: mesenteric lymph node enlargement-
omental cake: metastases to omentum -
sausage digit: underlying inflammatory arthritis or dactylitis -
head cheese sign: hypersensitivity
pneumonitispneumonitis - ice cream cone sign: in acoustic neuroma
- leather bottle stomach: of linitis plastica (or water bottle sign)
-
mesenteric hamburger sign (also called sandwich sign):
in acoustic neuromamesenteric nodal mass - omental cake: metastases to omentum
- sausage digit: underlying inflammatory arthritis or dactylitis
- +<a href="/articles/endosteal-scalloping">endosteal scalloping</a>: medullary cavity masses, e.g. <a href="/articles/multiple-myeloma-1">multiple myeloma</a>
- +</li>
- +<li>
-<a href="/articles/vertebral-scalloping">vertebral scalloping</a>: may be anterior or posterior border</li>-<li>-<a href="/articles/endosteal-scalloping">endosteal scalloping</a>: medullary cavity masses, e.g. multiple myeloma</li>-<li>-<a href="/articles/manta-ray-sign-bladder">manta ray sign</a>: of <a href="/articles/bladder-exstrophy">bladder exstrophy</a> </li>-</ul><h4>Birds</h4><ul>-<li>-<a href="/articles/eggshell-calcification-lymph-nodes">eggshell calcification</a>: <a href="/articles/silicosis">silicosis</a> and occasionally <a href="/articles/sarcoidosis-1">sarcoidosis</a>- +<a href="/articles/manta-ray-sign-bladder">manta ray sign</a>: of <a href="/articles/bladder-exstrophy">bladder exstrophy</a>
-<a href="/articles/swan-neck-deformity-fingers">swan neck deformity</a>: of <a href="/articles/rheumatoid-arthritis">rheumatoid arthritis</a>-</li>- +<a href="/articles/vertebral-scalloping">vertebral scalloping</a>: may be anterior or posterior border</li>
- +</ul><h4>Birds</h4><ul>
-<a href="/articles/gull-wing-appearance-phalanges">gull wing appearance</a>: <a href="/articles/erosive-osteoarthritis">erosive osteoarthritis</a>- +<a href="/articles/eggshell-calcification-lymph-nodes">eggshell calcification</a>: <a href="/articles/silicosis">silicosis</a> and occasionally <a href="/articles/sarcoidosis-1">sarcoidosis</a>
- +</li>
- +<li>
- +<a href="/articles/gull-wing-appearance-phalanges-1">gull wing appearance</a>: <a href="/articles/erosive-osteoarthritis">erosive osteoarthritis</a>
-<li><a href="/articles/winking-owl-sign-spine">the winking owl sign</a></li>- +<li>
- +<a href="/articles/swan-neck-deformity-fingers">swan neck deformity</a>: of <a href="/articles/rheumatoid-arthritis">rheumatoid arthritis</a>
- +</li>
- +<li><a href="/articles/winking-owl-sign-spine">winking owl sign</a></li>
-<a href="/articles/target-sign-disambiguation">bull's eye</a>: many of these</li>- +<a href="/articles/anteater-nose-sign-foot">anteater nose sign</a>: <a href="/articles/calcaneonavicular-coalition">calcaneonavicular coalition</a>
- +</li>
- +<li>bat's wing<ul>
-<a href="/articles/staghorn-calculus-kidney">staghorn calculus</a>: struvite renal calculi</li>- +<a href="/articles/bat-wing-opacities-lungs">pulmonary opacities</a>, e.g. in alveolar oedema</li>
-<a href="/articles/feline-oesophagus">feline oesophagus</a>: horizontal striations seen on barium swallows as a variant of normal.</li>- +<a href="/articles/bat-wing-4th-ventricle">4th ventricle</a> (<a href="/articles/joubert-syndrome-1">Joubert anomaly</a> and related syndromes)</li>
- +</ul>
- +</li>
-<a href="/articles/eye-of-the-tiger-sign-globus-pallidus">eye of tiger sign</a>: classical of <a href="/articles/pantothenate-kinase-associated-neurodegeneration">Hallervorden-Spatz syndrome</a>- +<a href="/articles/bear-paw-sign-kidney">bear's paw sign</a>: <a href="/articles/xanthogranulomatous-pyelonephritis">xanthogranulomatous pyelonephritis</a>
-<li><a href="/articles/pleural-mouse">pleural mouse</a></li>-<a href="/articles/panda-sign-midbrain-1">panda sign</a><ul>-<li>of the midbrain: <a href="/articles/wilson-disease-2">Wilson disease</a>- +<a href="/articles/target-sign-disambiguation">bull's eye</a>: evoked in the mind's eye by many a pathology</li>
- +<li>
- +<a href="/articles/dural-tail-sign-1">dural tail</a>: of <a href="/articles/meningioma">meningioma</a> and several other dura-based lesions</li>
- +<li>
- +<a href="/articles/eye-of-the-tiger-sign-globus-pallidus">eye of tiger sign</a>: classical of <a href="/articles/pantothenate-kinase-associated-neurodegeneration">Hallervorden-Spatz syndrome</a>
-<li>of <a href="/articles/sarcoidosis-1">sarcoidosis</a>- +<li>
- +<a href="/articles/feline-oesophagus">feline oesophagus</a>: horizontal striations seen on barium swallows as a variant of normal</li>
- +<li>
- +<a href="/articles/hidebound-sign-bowel">hidebound sign</a>: <a href="/articles/scleroderma-gastrointestinal-manifestations-1">gastrointestinal scleroderma</a>
-</ul>- +<li>joint mouse: <a title="Intra-articular loose body" href="/articles/intra-articular-loose-bodies-2">intra-articular loose body</a> resulting from <a title="Osteochondritis dissecans" href="/articles/osteochondritis-dissecans">osteochonritis</a><a title="Osteochondritis dissecans" href="/articles/osteochondritis-dissecans"> </a><a title="Osteochondritis dissecans" href="/articles/osteochondritis-dissecans">dissecans</a>
-<a href="/articles/bear-paw-sign-kidney">bear's paw sign</a>: <a href="/articles/xanthogranulomatous-pyelonephritis">xanthogranulomatous pyelonephritis</a>- +<a href="/articles/moose-head-appearance">moose head appearance</a>: appearance of lateral horns on coronal sections in <a title="Corpus callosal dysgenesis" href="/articles/dysgenesis-of-the-corpus-callosum">corpus callosal dysgenesis</a>
-<li><a href="/articles/scotty-dog-sign-spine">scotty dog sign</a></li>-<a href="/articles/hidebound-sign-bowel">hidebound sign</a>: <a href="/articles/scleroderma-gastrointestinal-manifestations-1">gastrointestinal scleroderma</a>- +<a href="/articles/panda-sign-midbrain-1">panda sign</a><ul>
- +<li>of the <a href="/articles/midbrain">midbrain</a>: <a href="/articles/wilson-disease-2">Wilson disease</a>
- +</li>
- +<li>of <a href="/articles/sarcoidosis-1">sarcoidosis</a>
- +</li>
- +</ul>
- +<li><a href="/articles/pleural-mouse">pleural mouse</a></li>
-<a href="/articles/dural-tail-sign-1">dural tail</a>: of <a href="/articles/meningioma">meningioma</a>- +<a href="/articles/rat-bite-erosions-gout">rat bite erosions</a> of <a href="/articles/gout">gout</a>
- +<li><a href="/articles/scottie-dog-sign-spine">scotty dog sign</a></li>
-<a href="/articles/rat-bite-erosions-gout">rat bite erosions</a> of <a href="/articles/gout">gout</a>- +<a href="/articles/staghorn-calculus-kidney">staghorn calculus</a>: struvite <a href="/articles/urolithiasis">renal calculi</a>
-<li>bat's wing: <a href="/articles/bat-wing-opacities-lungs">pulmonary opacities</a> and <a href="/articles/bat-wing-4th-ventricle">4th ventricle</a> (<a href="/articles/joubert-syndrome-1">Joubert anomaly</a> and related syndromes)</li>-<li>-<a href="/articles/anteater-nose-sign-foot">anteater nose sign</a>: calcaneonavicular coalition </li>-<li><a href="/articles/moose-head-appearance">moose head appearance</a></li>-<li>-<a href="/articles/snake-eyes-facial-nerve-1">snake eyes</a>: appearance of facial canal in the petrous temporal bone</li>- +<li><a href="/articles/butterfly-fracture">butterfly fracture</a></li>
-<a href="/articles/butterfly-glioma">butterfly glioma</a>: nothing "oooh... isn't it pretty" about this one</li>- +<a href="/articles/butterfly-glioma">butterfly glioma</a>: glioma crossing midline to contralateral hemisphere</li>
-<li><a href="/articles/butterfly-fracture">butterfly fracture</a></li>-</ul><h4>Reptiles</h4><ul><li>- +</ul><h4>Reptiles</h4><ul>
- +<li>
-</li></ul><h4>Mythical creatures</h4><ul>- +</li>
- +<li>
- +<a href="/articles/snake-eye-appearance-spinal-cord-1">snake-eye appearance</a>: pathology of anterior horns of cervical grey matter</li>
- +<li>
- +<a href="/articles/snake-eyes-facial-nerve-1">snake eyes</a>: appearance of facial canal in the petrous temporal bone</li>
- +</ul><h4>Mythical creatures</h4><ul>
-<a href="/articles/medusa-head">medusa head</a>:<ul>- +<a href="/articles/medusa-head">medusa head</a><ul>
-<li>also a sign of severe <a href="/articles/caput-medusae-sign-portal-hypertension-1">portal hypertension</a>-</li>- +<li>also a sign of severe <a href="/articles/caput-medusae-sign-portal-hypertension-1">portal hypertension</a> (i.e. <em>caput medusae</em>)</li>
-<li>cervical hamburger sign: normal cervical facet joints on axial CT</li>- +<li>cervical hamburger sign: normal cervical <a href="/articles/facet-joint">facet joints</a> on axial CT</li>
-<a href="/articles/honeycombing-lungs">honeycomb lung</a>: UIP/pulmonary fibrosis</li>- +<a href="/articles/honeycombing-lungs">honeycomb lung</a>: <a href="/articles/usual-interstitial-pneumonia">UIP</a>/<a href="/articles/pulmonary-fibrosis">pulmonary fibrosis</a>
- +</li>
-<a href="/articles/sandwich-sign-mesentery">mesenteric hamburger sign</a>: mesenteric lymph node enlargement</li>- +<a href="/articles/head-cheese-sign-lungs">head cheese sign</a>: <a href="/articles/hypersensitivity-pneumonitis">hypersensitivity pneumoniti</a><a href="/articles/hypersensitivity-pneumonitis">s</a>
- +</li>
-<a href="/articles/omental-cake">omental cake</a>: metastases to omentum </li>- +<a href="/articles/ice-cream-cone-sign-2">ice cream cone sign</a>: in <a href="/articles/acoustic-schwannoma-1">acoustic neuroma</a>
- +</li>
-<a href="/articles/sausage-digit">sausage digit</a>: underlying inflammatory arthritis or dactylitis</li>- +<a href="/articles/leather-bottle-stomach">leather bottle stomach</a>: of <a href="/articles/linitis-plastica">linitis plastica</a> (or <a href="/articles/water-bottle-sign-heart">water bottle sign</a>)</li>
-<a href="/articles/head-cheese-sign-lungs">head cheese sign</a>: hypersensitivity pneumonitis</li>- +<a href="/articles/sandwich-sign-mesentery">mesenteric hamburger sign</a> (also called sandwich sign): mesenteric nodal mass</li>
-<a href="/articles/leather-bottle-stomach">leather bottle stomach</a>: of <a href="/articles/linitis-plastica">linitis plastica</a> (or <a href="/articles/water-bottle-sign-heart">water bottle sign</a>)</li>- +<a href="/articles/omental-cake">omental cake</a>: metastases to <a href="/articles/omentum">omentum</a>
- +</li>
-<a href="/articles/ice-cream-cone-sign-2">ice cream cone sign</a>: in acoustic neuroma</li>- +<a href="/articles/sausage-digit">sausage digit</a>: underlying inflammatory arthritis or dactylitis</li>