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Aug 4, 2020 · When a pathological fracture occurs, cortical bone fragments float within cyst fluid (called fallen leaf sign); this phenomenon is pathognomonic of simple bone cyst (Skeletal Radiol 1989;18:261)
Most benign bone tumors have a characteristic appearance on radiographs that can aid in diagnosis and prevent unnecessary additional imaging or invasive diagnostic procedures. Unicameral bone cysts are typically asymptomatic and found on imaging incidentally.
Apr 10, 2010 · The location of a bone lesion within the skeleton can be a clue in the differential diagnosis. The illustration on the left shows the preferred locations of the most common bone tumors.
Oct 25, 2022 · Good knowledge of clinical/radiological presentations of bone cysts and possible distinguishing features from other bone tumors presenting as lytic lesions of the bone is of utmost importance in appropriate medical planning and management of these lesions.
Jun 17, 2025 · Compared to the other lesions in this list, aneurysmal bone cysts are markedly expansile (hence, 'aneurysmal') and have a thin cortical shell. On MRI, the differential is much shorter, especially when age, location and plain film appearance are taken into account.
There is a pathological fracture (white arrow) through this septated, unicameral bone cyst in the classic location of the proximal humerus.
Recognizing benign vs malignant bone cysts on radiographs can be challenging. Clinicians may not always recognize important historical and physical findings associated with bone cysts. It is important for clinicians to know what tests need to be ordered and when to refer to a pediatric orthopedic specialist.
Nov 23, 2012 · Fibrous dysplasia appears radiographically as a well-defined lucent area, which varies from completely radiolucent to homogeneous ground-glass density depending on the amount of fibrous or osseous tissue deposited in the medullary cavity.
May 14, 2017 · Aneurysmal bone cysts have a distinct imaging appearance once magnetic resonance imaging is done. Subperiosteal hematic cysts have a distinctive appearance. Bone cysts likely have more than one etiology, and some may cause significant symptoms.
Jan 27, 2025 · Simple bone cyst on bone scintigraphy tends to appear as foci of photopenia (cold spot). This is referred to as the doughnut sign which results in increased uptake peripherally and a photopenic center.
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