Items tagged “bone tumour”

33 results found
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Tumors that metastasize to bone (mnemonic)

Tumors that metastasize to bone may be remembered using the mnemonic "PBKTL", rendered as "lead kettle", as "Pb" is the standard abbreviation for the chemical element, lead. PB-KTL Mnemonic P: prostate B: breast K: kidney T: thyroid L: lung For females, breast and lung are the most commo...
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Type 1 pelvic resection

Type 1 pelvic resections are complex surgeries that involve removing part of the pelvis, usually to resect malignant tumor. Type 1 pelvic resections remove a varying amount of the iliac bone, and are classified in general terms as "partial" or "complete", depending on how much of the iliac bone...
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Describing a bone lesion

Describing a bone lesion is an essential skill for the radiologist, used to form an accurate differential diagnosis for neoplastic entities, and occasionally non-neoplastic. In addition to patient demographics, the radiographic features of a bone lesion are often the primary determinant of non-h...
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Osteochondromyxoma

Osteochondromyxomas (OMX) are very rare benign tumors with both a chondroid and osteoid matrix mostly seen within the Carney complex. Epidemiology Generally, osteochondromyxomas are extremely rare. Within the Carney complex, they occur in about 1% of the patients and are usually seen early in ...
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High-grade surface osteosarcoma

High-grade surface osteosarcomas are sporadic and high-grade malignant osteoid-forming tumors emerging from the bony surfaces similar to parosteal and periosteal osteosarcomas. Epidemiology High-grade surface osteosarcomas are very rare and constitute <1% of all osteosarcomas. There seems to b...
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Epithelioid hemangioma of bone

Epithelioid hemangiomas of bone are benign intraosseous vascular neoplasms of epithelioid morphology which show locally aggressive behavior. Terminology The following terms are not recommended 1:  histiocytoid hemangioma hemorrhagic epithelioid hemangioma spindle cell hemangioma Epidemiolo...
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Fibrocartilaginous mesenchymoma

Fibrocartilaginous mesenchymomas are very rare locally aggressive mesenchymal bone tumors composed of spindle cells seen in children and adolescents. Terminology The term 'fibrocartilaginous mesenchymoma with low-grade malignancy' has been discouraged 1. Epidemiology Fibrocartilaginous mesen...
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Poorly differentiated chordoma

Poorly differentiated chordomas are highly aggressive poorly differentiated notochordal tumors with a loss of SMARCB1 expression. Epidemiology Poorly differentiated chordomas are very rare tumors typically seen in children and young adults under the age of 30 years. Females are more frequently...
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Dedifferentiated chordoma

Dedifferentiated chordomas are biphasic malignant tumors composed of notochordal and high-grade sarcomatous components. Epidemiology Dedifferentiated chordomas are very rare tumors that might be seen in recurrences or after radiotherapy 1-3. Diagnosis The diagnosis is based on typical imagin...
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Aggressive vs non-aggressive bone lesions (radiographs)

Bone lesions are generally characterized as either aggressive versus non-aggressive bone lesions, with radiographs comprising much of the initial assessment.  Imaging features When describing a bone lesion, some of its features reflect its biological activity. These characteristics include zon...
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Bone Reporting and Data System (Bone-RADS)

The Bone Reporting and Data System (Bone-RADS) is an algorithm developed and proposed by the Practice Guidelines and Technical Standards Committee of the Society of Skeletal Radiology for the diagnostic workup of incidentally encountered solitary bone lesions in adults on MRI and/or CT 1. It has...
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Central atypical cartilaginous tumor/ low-grade chondrosarcoma

Central atypical cartilaginous tumors/chondrosarcomas grade 1 (ACT/CS1) or low-grade central chondrosarcomas are locally aggressive chondral neoplasms that arise centrally within bone from the medullar cavity. They constitute the most common form of conventional chondrosarcoma. Terminology The...
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Radium-223 dichloride

Radium-223 dichloride, trade name Xofigo, is a radiopharmaceutical approved for the treatment of patients with symptomatic bone metastases and no visceral disease from prostate cancer resistant to anti androgen therapy. The molecule mimics calcium and forms a complex with hydroxyapatite at sites...