Questions and Answers
What is edema? - CORRECT ANSWER-accumulation of abnormal amounts of fluid in
the intercellular tissue spaces or body cavities
What is ischemia? - CORRECT ANSWER-Interference of blood supply to an organ,
deprives cells and tissues of oxygen and nutrients
What is an infarct? - CORRECT ANSWER-Localized area of ischemic necrosis
What is atrophy? - CORRECT ANSWER-Reduction in size or number of cells in and
organ or tissue
What is hypertrophy? - CORRECT ANSWER-Increase in size of cells of a tissue or
organ
How does cystic fibrosis appear on imaging? - CORRECT ANSWER-Generalized
thickening of linear markings
How does hyaline membrane disease appear radiographically? - CORRECT ANSWER-
Air bronchogram sign, minute granular densities in parenchyma
How does croup appear radiographically? - CORRECT ANSWER-steeple sign
How does epiglottitis appear radiographically? - CORRECT ANSWER-rounded
thickening epiglottic shadow
How does a lung abscess appear radiographically? - CORRECT ANSWER-
encapsulated opaque mass with air-fluid level
How does RSV appear radiographically? - CORRECT ANSWER-hyperinflation with
diffuse increased interstitial markings
How does SARS appear radiographically? - CORRECT ANSWER-Early focal infiltrates
progressing to generalized patchy interstitial infiltrates
How does emphysema appear radiographically? - CORRECT ANSWER-Hyperinflation,
bulla formation, flattened diaphragm, radiolucent retrosternal space
How does silicosis appear radiographically? - CORRECT ANSWER-Multiple, well
defined scattered nodules of uniform density
, How does asbestosis appear radiographically? - CORRECT ANSWER-Pleural
thickening with calcified plaques
How does pulmonary embolism appear radiographically? - CORRECT ANSWER-
Appears on CXR on serial images with progressive enlargement of affected vessel and
on CT as a filling defect
How does mediastinal emphysema appear radiographically? - CORRECT ANSWER-
radiolucency running parallel to heart border
How does empyema appear radiographically? - CORRECT ANSWER-Lesion -
loculated fluid with possible air-fluid level
How does spina bifida appear radiographically? - CORRECT ANSWER-Splitting of bony
neural canal
How does osteogenesis imperfecta appear radiographically? - CORRECT ANSWER-
pathologic fracture, very thin cortical density
How does hip dysplasia appear radiographically? - CORRECT ANSWER-AP and frog
leg projection will show posterior and superior dislocation
How does rickets appear radiographically? - CORRECT ANSWER-Cupped and frayed
metaphysis in long bones
How does Paget's disease appear radiographically? - CORRECT ANSWER-
radiolucencies in destructive phase, and cotton-wool appearance in reparative stage
How does lead poisoning appear radiographically? - CORRECT ANSWER-Classic lead
lines, dense transverse bands across metaphyses of long bones
How does ischemic necrosis appear radiographically? - CORRECT ANSWER-Crescent
sign, lytic/sclerotic areas with flattening of femoral head
How does osteochondroma appear radiographically? - CORRECT ANSWER-Tumor
runs parallel to long bone and points away from nearest joint
How does a giant cell tumor appear radiographically? - CORRECT ANSWER-Multiple
large bubbles separated by strips of bone
How does osteogenic sarcoma appear radiographically? - CORRECT ANSWER-mixed
destructive/sclerotic lesion wit soft tissue mass, sunburst pattern
How does Ewing sarcoma appear on x-ray? - CORRECT ANSWER-Onion skin
appearance