Endosteal scalloping

Endosteal scalloping refers to the focal resorption of the inner margin of cortical bones, typically seen in 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 aetiology. In fact although the appearance of the cortico-medullary junction of bones affected with myeloma and metastases can look very similar (and the term endosteal scalloping is used by many authors) the underlying mechanism of resorption may well be different 3

Differential diagnosis

Lesions that typically result in endosteal scalloping include:

Inspired signs
Share article

Article information

rID: 16624
Sections: Gamuts, Signs
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    X-ray
    Case 1: multiple myeloma - femur
    Drag here to reorder.
  • Drag
    CT
    Case 1: multiple myeloma - femur
    Drag here to reorder.
  • Drag
    Case 2: NSCLC metastasis
    Drag here to reorder.
  • Drag
    Endosteal scallop...
    Case 3: multiple myeloma
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.