by Homoeopathy Specialty Clinic Bilaspur

pple core lesion or Napkin Ring sign in right hip synovial chondromatosis ... same can be viewed in colonic Ca.... seems like eaten apple.

Bamboo Spine —fused spinal segments with their syndesmophytes look, on radiographs, similar to bamboo stalks—classically associated with ankylosing spondylitis.

Bird's Beak— noted on Upper GI with contrast, a dilated upper/middle esophagus with an abrupt taper to exceptionally narrowed lumen, typical of achalasia.

Boot-shaped Heart —due to RVH, the LV is lifted above the edge of the diaphragm, forming the “toe” of the boot. Classic for Tetralogy of Fallot.

Bat's Wing/Butterfly —this appearance on CXR is classically associated with CHF and resultant pulmonary edema.

Cobblestone appearance— this sign is produced on barium studies due to ulcerative pockets, usually in the terminal ileum, indicative of Crohn's.

Codman's Triangle —a triangle on plain film of extremities that signifies reactive bone, classically associated with osteosarcoma, or other infectious/hemorrhagic process that causes periosteal elevation.

Coin lesion— solitary pulmonary nodule; may be cancer or granuloma.

Cookie Cutter lesions
— metastatic lesions to bone cortex, or Paget's.
Crescent sign— classic sign of avascular necrosis, femoral head.

Egg-on-a-string— a large, ovoid-shaped heart on newborn CXR, classically signifying complete transposition of the great vessels with intact ventricular septum.

Ground glass— a “white-out” on CXR, usually PCP pneumonia or ARDS.

Hampton's Hump— a peripheral triangle, usually near pleural edges, classically PE.

Honeycomb lung— used to describe any pathologic process that causes radiographic appearance of multiple small, thick-walled cystic spaces; e.g. pulmonary fibrosis.

Lead pipe sign— classic narrowing of bowel lumen, with loss of haustra—UC.

Napkin Ring sign— see Apple core lesion above; pathology identical, but lumen more narrowed.

Onion-skinning —layered look of periosteum in Ewing's Sarcoma.

Rachitic Rosary —this is a “string of beads” appearance on x-ray, a thickening of costochondral margins that is noted in Ricketts(Vit. D Deficiency).

Sail sign —fat pad noted on plain film, indicative of shoulder disclocation.

Scotty dog(collar) —on posterior oblique, the lumbar vertebrae look like a Scottish terrier. The neck is the pars interarticularis, and a break(a collar) noted there indicates spondylolysis.

String sign
—thin, slightly irregular shadow in narrowed lumen of ileum, suggestive of Crohn's.

Silhouette sign —obliteration of cardiovascular silhouette due to adjacent disease, ie pneumonia, TB, etc.

Stepladder appearance
—distended bowel loops, often indicative of obstruction, usually SBO.

Sunburst appearance—“clouds, clumps, and consolidated rays” of tissue emanating from bone cortex, or within bony structures, indicative of osteosarcoma.

Thumb(print) sign —on lateral c-spine, an enlarged epiglottis appears as a “thumb”—epiglottitis.

Westermark's sign —abrupt end to a pulmonary vessel, signifying oligemia or PE

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