Benign Bone Tumors Flashcards
What is the MC BBT of the appendicular skeleton
Osteochondroma
Coat hanger exostosis indicates
Osteochondroma
Hereditary multiple exostosis is aka
multiple osteochondromas
Age range for most osteochondromas
<20yrs
Unicameral Bone cysts aka
simple bone cyst, solitary bone cyst
Fallen fragment sign is associated with
SBC
Location of a Simple Bone cyst
diaphyseal/metaphyseal located, CENTRALLY located
Age range for most SBC
<20yrs
Location of an ABC
diaphyseal/metaphyseal, ECCENTRICALLY located
Age range of ABC
<20yrs
a lytic soap bubble appearance indicates
ABC
Giant cell tumor location
diaphyseal/metaphyseal
Age range for Giant cell tumor
20-40
What bones does GCT MC affect
Long bones 80% of the time
Location of Chondroblastoma
epiphyseal/metaphyseal
Age range of Chondroblastomas
<20
Chondroblastoma is what kind of lesion
Eccentric, lytic
What kind of margins does a chondroblastoma have
WELL DEFINED sclerotic margin
BBT relieved by aspirin at night
osteoid osteoma
This BBT has a central nidus and severe reactive sclerosis
Osteoid osteoma
Double density sign is associated with
osteoid osteoma
How to locate a osteoid osteoma
CT scan
Brodie’s abscess mimics
osteoid osteoma because night pain relieved with aspirin
MC BBT of the hand
Enchondroma
What is multiple enchondromas called
Ollier’s disease
Maffucci’s syndrome is
Ollier’s disease with soft tissue calcification
MC BBT of the spine
Hemangioma
Vertical striations like accordion/corduroy cloth/honeycomb appearance indicates
hemangioma
A round or oblong bone island is called
Enostoma
What is osteopoikilosis
multiple bone islands
Osteoblastoma MC affects the
neural arch
appearance of an osteoblastoma
looks blastic, increase in matrix calcification
MC BBT to affect skull
osteoma
What view is best for finding an osteoma in the skull
Caldwell projections
Rind sign indicates
Fibrous Dysplasia
Saber Shin tibia
Fibrous Dysplasia
Sheppard’s Crook
Fibrous Dysplasia
Ground glass appearance
Fibrous Dysplasia
“café au lait” spots
Fibrous Dysplasia
Coast of Maine appearance
Fibrous Dysplasia
Neurofibromatosis is
familial history, patient may present with scoliosis, cervical kyphosis, vertebral body scalloping with IVF enlargement