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| *The table below summarizes how to differentiate multiple myeloma from other conditions that cause similar presentation:<ref name="seer">{{Cite web | last = | first = | title = Myeloma - SEER Stat Fact Sheets | url = http://seer.cancer.gov/statfacts/html/mulmy.html | publisher = | date = | accessdate = 17 February 2014 }}</ref> | | *The table below summarizes how to differentiate multiple myeloma from other conditions that cause similar presentation:<ref name="seer">{{Cite web | last = | first = | title = Myeloma - SEER Stat Fact Sheets | url = http://seer.cancer.gov/statfacts/html/mulmy.html | publisher = | date = | accessdate = 17 February 2014 }}</ref> |
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| {| {{table}} cellpadding="4" cellspacing="0" style="border:#c9c9c9 1px solid; margin: 1em 1em 1em 0; border-collapse: collapse;"
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| | align="center" style="background:#4479BA;" |'''Plasma Cell Neoplasm'''
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| | align="center" style="background:#4479BA;" |'''M Protein Type'''
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| | align="center" style="background:#4479BA;" |'''Pathology'''
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| | align="center" style="background:#4479BA;" |'''Clinical Presentation'''
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" | MGUS|| style="padding: 5px 5px; background: #F5F5F5;" |IgG kappa or lambda; or IgA kappa or lambda|| style="padding: 5px 5px; background: #F5F5F5;" |<10% [[plasma cells]] in bone marrow|| style="padding: 5px 5px; background: #F5F5F5;" |Asymptomatic, with minimal evidence of disease (aside from the presence of an M protein)
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" | Isolated plasmacytoma of bone|| style="padding: 5px 5px; background: #F5F5F5;" |IgG kappa or lambda; or IgA kappa or gamma|| style="padding: 5px 5px; background: #F5F5F5;" |Solitary lesion of bone; <10% plasma cells in marrow of uninvolved site|| style="padding: 5px 5px; background: #F5F5F5;" |Asymptomatic or symptomatic
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" | Extramedullary plasmacytoma|| style="padding: 5px 5px; background: #F5F5F5;" |IgG kappa or lambda; or IgA kappa or gamma|| style="padding: 5px 5px; background: #F5F5F5;" |Solitary lesion of soft tissue in the nasopharynx, tonsils, or sinuses || style="padding: 5px 5px; background: #F5F5F5;" |Asymptomatic or symptomatic
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" | Multiple myeloma|| style="padding: 5px 5px; background: #F5F5F5;" |IgG kappa or lambda; or IgA kappa or gamma|| style="padding: 5px 5px; background: #F5F5F5;" |Often multiple lesions of bone|| style="padding: 5px 5px; background: #F5F5F5;" |Symptomatic
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| *Another important differential diagnosis is that of widespread bony metastases. Findings that favor the diagnosis of bony metastases over that of multiple myeloma include:<ref>Multiple myeloma. Radiopaedia (2015)http://radiopaedia.org/articles/multiple-myeloma-1 Accessed on September, 20th 2015</ref>
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| :* Bone metastases more commonly affect the vertebral pedicles rather than vertebral bodies.
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| :* Bone metastases rarely involve mandible and distal axial skeleton.
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| :* Although both entities have variable bone scan appearances (both hot and cold) unlike multiple myeloma, extensive bony metastases rarely have a normal appearance.
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| *Multiple myeloma must also be differentiated from other causes of bone pain and fatigue such as:
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| :* [[Waldenström's macroglobulinemia|Waldenstrom Hypergammaglobulinemia]]
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| :* [[Bone fracture]]
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| :* [[Fibrous dysplasia]]
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| :* [[Enchondroma]]
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| :* [[Eosinophilic granuloma]]
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| :* [[Osteoclastoma|Giant cell tumor]]
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| :* [[Osteoblastoma]]
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| :* [[Aneurysmal bone cyst]]
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| :* [[Traumatic bone cyst|Solitary bone cyst]]
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| :* [[Hyperparathyroidism]]
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| :* [[Infection]]
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| :* [[Chondroblastoma]]
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| :* [[Fibroma|Chondromyxoid Fibroma]]
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| :* Reactive plasmacytosis
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| :* [[Macroglobulinemia]]
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| :* [[Osteoporosis]] (osteoporotic [[fracture]])
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| :* Idiopathic transient osteoporosis of [[hip]]
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| :* [[Osteomalacia]]
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| :* [[Osteogenesis imperfecta]]
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| :* [[Multiple myeloma]]
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| :* [[Homocystinuria]]
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| :* Hypermetabolic resorptive osteoporosis.
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| {| align="center" | | {| align="center" |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]
Overview
Multiple myeloma must be differentiated from monoclonal gammopathy of undetermined significance (MGUS), isolated plasmacytoma of the bone, and extramedullary plasmacytoma.[1]
Differentiating Multiple Myeloma from other Diseases
- The table below summarizes how to differentiate multiple myeloma from other conditions that cause similar presentation:[1]
References
Template:WikiDoc Sources