Test 3 Flashcards
True or false; the 3 fibrous diseases we discussed in class are usually asymptomatic
true - however fibrous dysplasia can cause pain once the dz has begun to cause deformities
True or false; all 3 fibrous pathologies we discussed in class begin and end in childhood (resolve on their own)
False; Fibrous dysplasia persists into adulthood
Non-ossifying fibroma is in between - if >8cm in size will need cutterage and bone chips to help resolve
What is the age of occurrence in simple bone cysts
3-14 years
What is the age of occurrence in ABC’s?
10-25 years
What is the age of occurrence in osteosarcoma
10-25 years
What is the age of occurrence in ewing’s sarcoma?
10-25 years
What is the age of onset in lymphoma
20-40 years
What is the age of onset in Giant cell tumors
20-40 years
True or false; hemangiomas effect patients >40
True
Age of occurrence in metastatic bone disease
> 40 years
Multiple myeloma has what age of onset?
> 50 years
True or false; Paget’s disease starts affecting patients at a young age
False; >50 - though more commonly in the elderly so >65 (he said today in class to think of Paget’s as a old person dz)
MC location of solitary bone cyst
Proximal humerus
MC location of fibrous dysplasia
Proximal femur
The proximal femur is the MC site for fibrous dysplasia; what defect can that cause?
Sheppard’s hook
MC location of giant cell tumors
Knee
MC location of ABCs
spine - specifically neural arch
MC location of Chondroblastoma
Knee
MC location of osteochondroma
knee
MC location of osteosarcoma
knee
True or false; most GCTs will become malignant
false; only ~20%
If you found a tumor in the wrist; what is the most likely Dx
GCT
MC location of endochondroma
hand
MC location of hemangioma
vertebral body
Second MC location for ABCs
Knee
What should your differential diagnoses be if you see the MRI of a hemangioma?
Solitary plasmocytoma (look in your book - or google image them - they look very similar but plasmocytoma has a more “blown out” appearance)
True or false: Aspirin will relieve the pain from an osteoblastoma
false; will relieve pain from osteiod osteoma
MC location for osteoid osteoma
proximal femur - bird nidus appearance
What pathology is associated with the “fallen fragment sign” and how likely are you to see it on an X-ray?
Solitary bone cyst
Very likely. SBC’s are typically asymptomatic until a fx occurs which causes the fallen fragment sign which is a piece of bone floating in the serous fluid
MC benign tumor of bone
solitary osteochondroma
True or false; solitary osteochondromas typically cause a host of symptoms including pain
False; typically are asymptomatic until a trauma to the area causes pain
What is the common treatment for GCTs
Surgical curettage with liquid nitrogen freezing
MC location of osteoblastoma
neural arch followed by long bones
If a patient had a painful scoliosis what should be your first thought?
Osteoblastoma
True or false; osteoblastomas are typically asymptomatic
false; 84% have a dull pain that is worse at night
“rain drop skull” is associated with
Multiple myeloma
True or false; Multiple myeloma commonly affects the skull
true “rain drop skull”
Age of occurrence in chondrosarcoma
usually over 50 years
True or false; Chondrosarcoma typically causes pain quickly after development
false; has late development of pain
Age of occurrence for all fibrous diseases (fibrous cortical defect, non-ossifying fibroma, fibrous dysplasia)
2-10 years
True or false; chondrosarcoma’s and enchondroma’s are easy to differeniate on plain film
false; need to tie in clinically - both have “popcorn calcification”
What is onchondromatosis/Ollier’s disease?
Multiple enchondromas
causes deformity in hands and feet
True or false; ABCs are typically slow growing
false; the most rapid growing tumor we talked about - causes extreme pain
True or false; Multiple myeloma likes the diaphseal region
true
Where does ewing’s sarcoma like to be in bone
diaphyseal region
A double density sign on bone scan is associated with
osteoid osteoma
Fluid fluid levels =
ABCs
What is a rind sign? And what is it associated with?
Thick sclerotic ring - fibrous dysplasia
What disease is osteoporosis circumscripta associated with
paget’s disease (stage 1 - lytic)
Rim sign in the pelvis =
Paget’s disease (stage 2 - mixed)
One eyed pedicle sign =
Could be congenital or lytic mets - need to tie in clinically or order MRI
Blade of grass sign =
Paget’s disease in long bones
Picture frame vertebrae =
paget’s disease in vertebrae
Ivory vertebrae =
Metastatic bone dz
Paget’s
Lymphoma
Only 2 pathologies women are more likely to get
ABCs and Hemangiomas
