DXI II-Exam 1Questions with Answers
WEEK 3 - ✔✔WEEK 3
Enchondroma
-hands, feet
-10-30 YO
-geographic lesion, central, endosteal scalloping, thinned cortex, expansion, 50%
stippled calcification
-pathologic fracture
-occasional malignant transformation
DDx-low grade chondrosarcoma, bone infarct - ✔✔Identify the lesion.
Ollier's Disease (multiple enchondromatosis)
-hands, feet, iliac crest
-similar to solitary enchondromas
-geographic, expansile, soap bubble lesions
-malignancy is higher in Ollier's Disease than solitary enchondromas - ✔✔Identify the lesion.
Maffucci's Syndrome
-multiple enchondromas combined with
hemangiomas -exceedingly rare
-hand - ✔✔Identify the lesion.
Osteochondroma
-most common benign bone tumor (50%)
-75% occur before age 20
, -2:1 male:female
-knee, shoulder, hip
-pedunculated type, thin, elongated stalk, metaphyseal, calcified cartilage cap
-sessile type, broad flat base w/ no stalk, common in humerus and scapula - ✔✔Identify
the lesion.
Chondroblastoma
-10-25 YOA
-epiphyseal
-geographic lesion, eccentric, round, oval, sclerotic rim, central calcification (50%), metaphyseal
periostitis - ✔✔Identify the lesion.
Chondromyxoid Fibroma
-rare, benign primary lesion
-10-30 YO
-fibrous, chondroid ground substance, giant
cells -soap-bubble
-most commonly occur in proximal tibia
-metaphyseal
-geopgraphic, eccentric, oval, round, endosteal scalloping, expansion - ✔✔Identify
the lesion.
Chondrosarcoma
-primary (de novo)
-secondary (arises from lesion associated with multiple myeloma, osteochondroma)
-third most common primary malignant bone tumor following multiple myeloma and
osteosarcoma
-40-60 YO
WEEK 3 - ✔✔WEEK 3
Enchondroma
-hands, feet
-10-30 YO
-geographic lesion, central, endosteal scalloping, thinned cortex, expansion, 50%
stippled calcification
-pathologic fracture
-occasional malignant transformation
DDx-low grade chondrosarcoma, bone infarct - ✔✔Identify the lesion.
Ollier's Disease (multiple enchondromatosis)
-hands, feet, iliac crest
-similar to solitary enchondromas
-geographic, expansile, soap bubble lesions
-malignancy is higher in Ollier's Disease than solitary enchondromas - ✔✔Identify the lesion.
Maffucci's Syndrome
-multiple enchondromas combined with
hemangiomas -exceedingly rare
-hand - ✔✔Identify the lesion.
Osteochondroma
-most common benign bone tumor (50%)
-75% occur before age 20
, -2:1 male:female
-knee, shoulder, hip
-pedunculated type, thin, elongated stalk, metaphyseal, calcified cartilage cap
-sessile type, broad flat base w/ no stalk, common in humerus and scapula - ✔✔Identify
the lesion.
Chondroblastoma
-10-25 YOA
-epiphyseal
-geographic lesion, eccentric, round, oval, sclerotic rim, central calcification (50%), metaphyseal
periostitis - ✔✔Identify the lesion.
Chondromyxoid Fibroma
-rare, benign primary lesion
-10-30 YO
-fibrous, chondroid ground substance, giant
cells -soap-bubble
-most commonly occur in proximal tibia
-metaphyseal
-geopgraphic, eccentric, oval, round, endosteal scalloping, expansion - ✔✔Identify
the lesion.
Chondrosarcoma
-primary (de novo)
-secondary (arises from lesion associated with multiple myeloma, osteochondroma)
-third most common primary malignant bone tumor following multiple myeloma and
osteosarcoma
-40-60 YO
