Most common benign bone tumor of the appendicular skeleton; either pedunculated or sessile? CORRECT ANSWERS: Osteochondroma
Name for multiple osteochondromas; 20% of them undergo malignancy? CORRECT ANSWERS: Hereditary multiple exostosis
Common benign bone tumor occuring primarily < 20 y...
Gold's Diagnostic Imaging Review|207 QUESTIONS| WITH
COMPLETE SOLUTIONS
Most common benign bone tumor of the appendicular skeleton; either pedunculated or sessile?
CORRECT ANSWERS: Osteochondroma
Name for multiple osteochondromas; 20% of them undergo malignancy? CORRECT
ANSWERS: Hereditary multiple exostosis
Common benign bone tumor occuring primarily < 20 year olds and is often clinically silent; 75%
of lesions in humerus and femur; associated with "fallen fragment" sign? CORRECT
ANSWERS: Unicameral / simple bone cyst
Only benign bone tumor we know of that does NOT respect the growth plate and will cross it; <
20 years usually and often associated with a trauma? CORRECT ANSWERS: Aneurysmal bone
cyst
Quasi malignant (20% of the time) bone tumor characterized by the presence of multinucleated
giant cells (soap bubble appearance); also most common tumor of the sacrum? CORRECT
ANSWERS: Giant cell tumor
Most common benign bone tumor of the hand and foot? CORRECT ANSWERS: Enchondroma
Multiple enchondromas is called? CORRECT ANSWERS: Ollier's disease
Multiple enchondromas with soft tissue calcification is called? CORRECT ANSWERS:
Maffucci's syndrome
Most common benign bone tumor in 10-25 y.o. males; severe pain that worsens at night and is
alleviated by aspirin; < 1cm, may occur in any bone in the body? CORRECT ANSWERS:
Osteoid osteoma
Most common benign bone tumor of the spine; seen as vertical striations on x-ray? CORRECT
ANSWERS: Hemangioma
Most common benign bone tumor to affect the skull and the frontal sinus? CORRECT
ANSWERS: Osteoma
Patient may present with scoliosis, posterior vertebral body scalloping with IVF enlargement /
destruction along with cafe au lait spots with Coast of California appearance? CORRECT
ANSWERS: Neurofibromatosis
Condition with resorption of normal bone replaced by fibrous tissue; often manifests with
bowing deformities and pathological fractures + Coast of Maine Cafe au Lait spots? CORRECT
ANSWERS: Fibrous dysplasia
, Localized noctural limb pain alleviated by aspirin; radiolucency with rim of heavy sclerosis and
nidus GREATER than 1 cm in size? CORRECT ANSWERS: Brodie's abscess
Enostomas are bone islands; multiple bone islands are referred to as _____________; incidental
x-ray finding with no clinical significance? CORRECT ANSWERS: Osteopoikilosis
Lab findings for this malignant neoplasm include: M spike on immunoelectrophoresis, reversed
A-G ratio, Bence-Jones proteinuria and cold bone scan? CORRECT ANSWERS: Multiple
myeloma
What is the aka for multiple myeloma? CORRECT ANSWERS: Plasma cell sarcoma
Most common primary malignancy of bone; early radiological sign is gross osteoporosis, no
reactive sclerosis or expansion, possible pathological collapse (vertebra plana)? CORRECT
ANSWERS: Multiple myeloma
Blastic metastasis from prostate usually appears where in spine? CORRECT ANSWERS:
Lumbars
Malignancy with ivory white vertebra; no change in vertebra size, no anterior body scalloping or
cortical thickening; hot bone scan and increased alk phos lab? CORRECT ANSWERS: Blastic
mets
Most common form of metastasis in ages 20-40; ivory white vertebra with anterior body
scalloping; need biopsy to confirm Reed Sternberg cells? CORRECT ANSWERS: Hodgkin's
disease
AKA for Paget's disease? CORRECT ANSWERS: Osteitis deformans
Malignancy in patient > 40 years, skeletal pain worse at night; moth eaten or permeative pattern
of destruction, trabeculae reabsorbed? CORRECT ANSWERS: Lytic mets
Two conditions that cause squaring off of vertebral bodies, also referred to as "picture frame
vertebra"? CORRECT ANSWERS: AS and Pagets
Malignant condition with lytic, combined, sclerotic and malignant phases; increased hat/shoe
size, increased Alk phos and urinary hydroxyproline? CORRECT ANSWERS: Pagets
Most common malignancy in children 10-25; metaphysis of long bone, causes a periosteal
reaction that is spiculated, radiating or sunburst in appearance? CORRECT ANSWERS:
Osteosarcoma
3-14 years of age, most commonly found in diaphysis of long bones; "onion skin" periosteal
reaction, "cortical saucerization" and Codman's triangle reaction? CORRECT ANSWERS:
Ewing's sarcoma
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