What is a Endosteal lesion?

Endosteal scalloping refers to the focal resorption of the inner layer of the cortex (i.e. the endosteum) of bones, most typically long bones, due to slow-growing medullary lesions. It is important to note that although it is evidence of a slow non-infiltrative lesion, it does not equate to benign etiology.

What is pepperpot skull?

Salt and pepper sign or pepper pot skull refers to multiple tiny well-defined lucencies in the calvaria caused by resorption of trabecular bone in hyperparathyroidism. There is a loss of definition between the inner and outer tables of the skull and a ground-glass appearance as well as spotty deossification.

What causes salt and pepper skull?

Salt and pepper calvaria (pepper pot skull) refers to multiple tiny hyperlucent areas in the skull vault caused by resorption of trabecular bone in hyperparathyroidism.

What is scalloped appearance?

Scalloped objects are decorated with a series of small curves along the edges.

What is raindrop skull?

The raindrop skull appearance of calvarial multiple myeloma is the presence of multiple, well-defined lytic lesions (punched out lesions) of various size scattered throughout the skull. This term is applied as an analogy to rain hitting a surface and splashing, where it leaves a random pattern of dark spots.

What causes lesions on the skull?

Metastases are the most frequent cause of skull lesions. Metastatic lesions are most commonly due to breast cancer in adults and neuroblastoma in children. Multiple myeloma presents as the classic “punched out” lytic lesions on radiographs. Eosinophilic granuloma is an osteolytic lesion with bevelled edges.

What does scalloped mean in medical terms?

(skal′ŏpt, skol′) Having a boundary or border shaped in a series of connected waves or C-shapes. Some rashes (like the rash of cutaneous T-cell lymphoma) have raised red borders whose outer edge resembles the shape of a scallop shell.

What is a scalloped edge?

Scalloped is used to describe a series of curves that repeat. So if the edge of your plate has a repeating pattern of humps or curves then it is considered to have a Scalloped edge.

What does a cyclops lesion look like on MRI?

On MRI, a soft-tissue mass is seen anteriorly or anterolaterally in the intercondylar notch near the tibial insertion of the reconstructed anterior cruciate ligament . Because of its fibrous content, a cyclops lesion typically has intermediate to low signal intensity with all pulse sequences.

What is Cyclops lesion of the knee?

Cyclops lesion (knee) The cyclops lesion, also known as localized anterior arthrofibrosis, is a painful anterior knee mass that arises as a complication of anterior cruciate ligament (ACL) reconstruction, although has rarely been reported in patients with ACL injuries that have not been reconstructed.

What is the pathophysiology of multiple myeloma?

Multiple myeloma is a monoclonal gammopathy and is the most common primary malignant bone neoplasm in adults. It arises from red marrow due to monoclonal proliferation of plasma cells and manifests in a wide range of radiographic abnormalities.

What are the radiographic findings of disseminated multiple myeloma?

Disseminated multiple myeloma has two common radiological appearances, although it should be noted that initially, radiographs may be normal, despite the presence of symptoms. The two main diffuse patterns are: numerous, well-circumscribed, lytic bone lesions (more common) punched out lucencies raindrop skull 7.