Podcast
Questions and Answers
A unicameral bone cyst is commonly found in adults in the diaphyseal region of long bones.
A unicameral bone cyst is commonly found in adults in the diaphyseal region of long bones.
False (B)
The ‘fallen fragment’ sign is indicative of a unilocular bone cyst that has experienced a fracture.
The ‘fallen fragment’ sign is indicative of a unilocular bone cyst that has experienced a fracture.
True (A)
On MRI, unicameral bone cysts return a low signal on T2 weighted sequences due to their content.
On MRI, unicameral bone cysts return a low signal on T2 weighted sequences due to their content.
False (B)
Unicameral bone cysts often present with significant pain and swelling in affected individuals.
Unicameral bone cysts often present with significant pain and swelling in affected individuals.
A unicameral bone cyst typically exhibits a wide zone of transition on x-ray imaging.
A unicameral bone cyst typically exhibits a wide zone of transition on x-ray imaging.
Flashcards
Unicameral Bone Cyst
Unicameral Bone Cyst
Benign, fluid-filled lesions found in the metaphyseal region of long bones, commonly in children.
Fallen Fragment Sign
Fallen Fragment Sign
A small fragment of bone that breaks off and falls into the cyst, appearing on X-ray.
Radiographic Features of Unicameral Bone Cyst
Radiographic Features of Unicameral Bone Cyst
X-ray appearance of a unicameral bone cyst, characterized by a well-defined lucency with a narrow zone of transition, no periosteal reaction, and no soft tissue component.
T2-weighted MRI
T2-weighted MRI
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Clinical Presentation of Unicameral Bone Cyst
Clinical Presentation of Unicameral Bone Cyst
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Study Notes
Unicamerular Bone Cysts (Simple Bone Cysts)
- Benign, asymptomatic lesions.
- Primarily in children.
- Located in the metaphyseal region of long bones.
- Pain may arise from a fracture, with "fallen fragment" sign.
- "Fallen fragment" sign: small cortex fragment breaks off and settles within the cyst.
- X-ray shows lucent bone lesion, narrow zone of transition, absence of periosteal reaction and soft tissue component.
- MRI shows high signal on T2-weighted sequences due to fluid content.
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