52 Questions
Chondroma is most commonly found in which part of the body?
Pelvic bones
What distinguishes osteosarcoma from osteoblastoma on X-ray imaging?
Destructive mixed blastic and lytic mass
What histologic feature is characteristic of osteochondroma?
Tons of osteoid
Which tumor shows a notable 'mushroom-like' appearance on X-ray imaging?
Osteochondroma
Aggressiveness of chondrosarcoma is determined by all of the following EXCEPT:
Presence of calcifications
In Ewing sarcoma, which part of the bone is typically affected?
Diaphysis
Which tumor has an ovoid shape with a long axis parallel to bone, a sclerotic margin, and a lobulated contour?
Chondromyxoid fibroma
Which benign tumor can lead to generalized loss of bone density with endosteal resorption and expand into bone lesions?
Hyperparathyroid
Which benign bone lesion originates from the calcaneus and does not require a biopsy?
Bone island
Which benign tumor may convert to chondrosarcoma in older patients and appears as a bubbly radiolucent lesion with calcifications?
Enchondroma
Which benign tumor presents as a bony projection from the bone surface resembling a mushroom cap?
Osteochondroma
Which benign tumor shows an increased T2 signal and decreased T1 signal on imaging studies?
Chondromyxoid fibroma
What is the notable thing about Fibrous Dysplasia?
NIDUS with zone of sclerosis
Which tumor can metastasize to the lungs or transform to fibrosarcoma or osteogenic sarcoma?
Giant Cell Tumor
What is the characteristic feature of an Aneurysmal Bone Cyst?
Swelling and pain subperiosteal
Which tumor has a CHICKEN WIRE appearance?
Chondroblastoma
In which tumor do you find a Replacement of bone interior with fibro-osseous tissue?
Fibrous Dysplasia
Which tumor shows an aggressive expansion and can lead to pain?
Giant Cell Tumor
What is the characteristic appearance of Pigmented Villonodular Synovitis (PVNS) on MRI imaging?
Low signal intensity on both T1 and T2
Which tumor/growth is characterized by having an appearance that resembles a coral reef on MRI imaging?
Pigmented Villonodular Synovitis (PVNS)
What is the age range commonly associated with Giant Cell Tumor of Tendon Sheath?
40-50
Which tumor/growth can cause joint pain, swelling, catching, locking, stiffness, or instability as symptoms?
Pigmented Villonodular Synovitis (PVNS)
What distinguishes Neurilemmoma (Schwannoma) from other benign tumors based on its location?
Perineum (peripheral nerve sheath)
Which tumor/growth can erode bone and joint structures, leading to pain and swelling?
Pigmented Villonodular Synovitis (PVNS)
What distinguishes a mucoid cyst from other benign tumors?
High recurrence rate after aspiration
Which imaging feature is characteristic of a lipoma?
High T2 signal intensity on MRI
What differentiates fibroma from other benign tumors?
Transillumination with skin
In which age group is pigmented villonodular synovitis (PVNS) most commonly seen?
20-30 years old
What is the primary symptom associated with a mucoid cyst?
Pressure causing pain due to cyst growth
Which option correctly characterizes lipomas compared to other benign tumors?
Observation as the primary treatment option
What type of tumor/growth is characterized by an aggressive expansion and can lead to pain?
Pigmented villonodular synovitis (PVNS)
Which benign tumor may convert to chondrosarcoma in older patients and appears as a bubbly radiolucent lesion with calcifications?
Mucoid cyst
In which type of tumor/growth would you expect to see a notable 'mushroom-like' appearance on X-ray imaging?
Fibroma
Which tumor/growth is characterized by an ovoid shape with a long axis parallel to bone, a sclerotic margin, and a lobulated contour?
Lipoma
What is the notable imaging feature of an aneurysmal bone cyst?
Bubble radiolucency with calcifications
Which tumor/growth is characterized by a piece of bone breaking off and depositing on the gravity-dependent edge of the lesion?
Solitary bone cyst
Which tumor is characterized by a 'mottled moth-eaten destructive lesion' appearance on imaging?
Ewing sarcoma
Which tumor is notable for its soft tissue mass, onion skin periosteal reaction, and presence in the diaphysis with periosteal reaction?
Osteogenic sarcoma
Which tumor/growth mimics osteomyelitis with symptoms of fever, pain, swelling, and increased ESR?
Ewing sarcoma
Which benign growth is characterized by a focal periosteal reaction, bubble radiolucency, calcifications, and extent into soft tissue?
Aneurysmal bone cyst
Which benign tumor can present with a BLOWOUT appearance, typically affecting individuals between the ages of 5-20, and is commonly found in the metaphysis?
Aneurysmal bone cyst
Which tumor/growth is characterized by an aggressive expansion, potentially leading to pain, and can rarely metastasize, transforming into fibrosarcoma or osteogenic sarcoma?
Giant cell tumor
In which age group is Ewing sarcoma most commonly observed, appearing as a large eccentric, oval, radiolucent, destructive lesion in the epiphysis?
>30s
What is a notable feature of Fibroma that distinguishes it from other tumors?
Vascular connective tissue stroma
Which tumor/growth is known for producing high amounts of prostaglandins, leading to night pain treated by aspirin, and consists of osteoid tissue intermixed with woven bone surrounded by sclerosis?
Osteoid osteoma
What imaging feature is characteristic of a Fibroma?
Mosaic glass appearance on MRI
What distinguishes an Aneurysmal Bone Cyst from other benign tumors on imaging studies?
Sharp borders and high signal intensity on T2-weighted MRI
In Ewing sarcoma, which part of the bone is typically affected?
Metaphysis
Which of the following is a notable characteristic of Osteoblastoma compared to other blastomas?
Common occurrence in children under 10 years old
What differentiates a Ganglion Cyst from a Fibroma based on imaging characteristics?
'Lights up' on imaging studies
Which MRI feature is typically seen in Fibromas compared to other benign tumors?
Low signal intensity on T1-weighted imaging
What is a distinguishing feature of a Mucoid Cyst compared to other benign lesions?
'DIPJ arthrodesis' as a resolution method for recurrence
Test your knowledge on differentiating between osteoblastoma and osteosarcoma, including their characteristics, symptoms, and radiographic findings. Learn about the age groups commonly affected by each type of bone tumor and their respective aggressiveness.
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