Question:hard
Identify the condition as shown.
Identify the condition as shown.
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A metaphyseal lytic lesion with a sclerotic rim and a channel toward the growth plate is a subacute osteomyelitis abscess.
Updated On: Jun 23, 2026
- Brodie abscess
- Osteoid osteoma
- Intracortical hemangioma
- Chondromyxoid fibroma
Show Solution
The Correct Option is A
Solution and Explanation
Step 1: Frame the picture as a chronic infective focus inside bone. An ovoid lucency aligned with the bone's long axis, ringed by dense sclerosis that blends into normal cortex, is the signature of an intraosseous abscess from subacute osteomyelitis.
Step 2: The patient profile reinforces it. These lesions favour skeletally immature children, more often boys, and sit in the metaphysis of long tubular bones, with the proximal and distal tibia leading the list.
Step 3: Hunt for the giveaway sign. A lucent, winding channel tracking toward the open growth plate is pathognomonic, often accompanied by periosteal reaction and adjacent soft-tissue swelling. Together these confirm a Brodie abscess.
Step 4: Rule out mimics: an osteoid osteoma carries a tiny radiolucent nidus and classic NSAID-responsive night pain; a chondromyxoid fibroma is an eccentric metaphyseal lytic lesion of a different texture; an intracortical hemangioma is rarer with a striated cortical pattern. None match the abscess channel here.
\[\boxed{\text{Brodie abscess}}\]
Step 2: The patient profile reinforces it. These lesions favour skeletally immature children, more often boys, and sit in the metaphysis of long tubular bones, with the proximal and distal tibia leading the list.
Step 3: Hunt for the giveaway sign. A lucent, winding channel tracking toward the open growth plate is pathognomonic, often accompanied by periosteal reaction and adjacent soft-tissue swelling. Together these confirm a Brodie abscess.
Step 4: Rule out mimics: an osteoid osteoma carries a tiny radiolucent nidus and classic NSAID-responsive night pain; a chondromyxoid fibroma is an eccentric metaphyseal lytic lesion of a different texture; an intracortical hemangioma is rarer with a striated cortical pattern. None match the abscess channel here.
\[\boxed{\text{Brodie abscess}}\]
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