Primary amyloidosis differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

Differentiating Primary amyloidosis from Other Diseases

Organ System Involvement Differential Diagnosis Causes Clinical Features Laboratory Findings Gold Standard Test Therapy
P = Polyneuropathy POEMS syndrome (Demyelinating)[1]
Metabolic Syndrome (Axonal pathology)[8]
Vitamin Deficiencies (Axonal Pathology)[10]
Guillain-Barre Syndrome (Demyelinating)[16]
  • Clinical diagnostic criteria (progressive weakness of more than two limbs, areflexia, and progression for no more than four weeks)[21]
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) (Mixed axonal and demyelinatiing)[24][25]
  • EFNS/PNS criteria[33]
  • Koski criteria[34]
Multifocal Motor Neuropathy[35]
  • Progressive, asymmetric, distal and upper limb predominant weakness
  • No significant sensory abnormalities
  • Areflexia
  • Clinical criteria (EFNS/PNS):[36]
    • Slowly progressive or step-wise progressive, focal, asymmetric limb weakness; i.e., motor involvement in the motor nerve distribution of at least two nerves for > 1 month.
    • No objective sensory abnormalities except for minor vibration sense abnormalities in the lower limbs
Organ System Involvement Differential Diagnosis Causes Clinical Features Laboratory Findings Gold Standard Test Therapy
Polyneuropathy POEMS syndrome (Demyelinating)
Metabolic Syndrome (Axonal pathology)
Vitamin Deficiencies (Axonal Pathology)
Guillain-Barre Syndrome (Demyelinating)
  • Delayed F waves
  • Clinical diagnostic criteria (progressive weakness of more than two limbs, areflexia, and progression for no more than four weeks)
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) (Mixed axonal and demyelinatiing)
  • EFNS/PNS criteria
  • Koski criteria
Multifocal Motor Neuropathy
  • Progressive, asymmetric, distal and upper limb predominant weakness
  • No significant sensory abnormalities
  • Areflexia
  • Clinical criteria (EFNS/PNS):
    • Slowly progressive or step-wise progressive, focal, asymmetric limb weakness; i.e., motor involvement in the motor nerve distribution of at least two nerves for > 1 month.
    • No objective sensory abnormalities except for minor vibration sense abnormalities in the lower limbs
Organ System Involvement Differential Diagnosis Causes Features Laboratory Findings Gold Standard Test Therapy
Organomegaly (Hepatosplenomegaly and Lymphadenopathy) Malaria
Kala-azar
Infective Hepatitis
Chronic Myelogenous Leukemia (CML)[37]
Lymphoma
Primary (AL) Amyloidosis
  • Typical green birefringence under polarized light after Congo red staining (appears in red under normal light)
  • Congo red staining
  • Melphalan-prednisone/dexamethasone
  • Dexamethasone plus Cyclophosphamide-thalidomide
  • Stem cell transplantation
Gaucher's Disease
Organ System Involvement Differential Diagnosis Causes Features Laboratory Findings Gold Standard Test Therapy
Cardiac Failure
Organ System Involvement Differential Diagnosis Causes Features Laboratory Findings Gold Standard Test Therapy
Plasma Cell Dyscrasias Multiple myeloma
  • Anemia
  • Thrombocytopenia
  • Leukopenia
  • Decreased albumin (reversed albumin:globulin ratio)
  • Increased serum creatinine, urea
  • Hypercalcemia
  • Elevated ESR
  • Normal-low alkaline phosphatase
  • RBC rouleaux formation
  • Bence-Jones proteins in urine
  • Clonal plasma cells on bone marrow exam greater than equal to 10%

AND

  • Any one of the following:
    • Evidence of end-organ damage
    • Hypercalcemia (>11 mg/dl)
    • Renal insufficiency
    • Anemia (Hb < 10 mg/dl)
    • Bone lesions
    • Greater than 1 lesions on MRI
Monoclonal gammopathy of undetermined significance (MGUS)
  • Serum M protein (IgG or IgA) <3g/dl

AND

  • Clonal bone marrow plasma cells < 10%

AND

  • No end-organ damage
  • Observation
Asymptomatic Plasma Cell Myeloma

(Smoldering and Indolent plasma cell myeloma)

  • Serum M protein (IgG or IgA greater than equal to 3 g/dl

OR

  • Urinary M protein greater than equal to 500 mg/24 h

AND/OR

  • Clonal bone marrow plasma cells 10-60%

AND

  • No end-organ damage
  • Observation
Plasmacytoma
  • On biopsy:
    • Solitary infiltrate of clonal plasma cells in bone (SBP) or soft tissue (EMP).
    • No evidence of infiltration by clonal plasma cells.
  • Negative skeletal survey plus MRI/CT spine and pelvis except for the solitary lesion.
  • Lack of hypercalcemia, renal insuffieciency, anemia, multiple bone lesions which would suggest MM
  • Diagnosis of exclusion
  • Radiotherapy
Skin Changes Scurvy
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  2. 2.0 2.1 2.2 Nozza A (2017). "POEMS SYNDROME: an Update". Mediterr J Hematol Infect Dis. 9 (1): e2017051. doi:10.4084/MJHID.2017.051. PMC 5584767. PMID 28894560.
  3. 3.0 3.1 3.2 3.3 3.4 Bardwick PA, Zvaifler NJ, Gill GN, Newman D, Greenway GD, Resnick DL (July 1980). "Plasma cell dyscrasia with polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes: the POEMS syndrome. Report on two cases and a review of the literature". Medicine (Baltimore). 59 (4): 311–22. PMID 6248720.
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 Takatsuki K, Sanada I (September 1983). "Plasma cell dyscrasia with polyneuropathy and endocrine disorder: clinical and laboratory features of 109 reported cases". Jpn. J. Clin. Oncol. 13 (3): 543–55. PMID 6315993.
  5. Nobile-Orazio E, Terenghi F, Giannotta C, Gallia F, Nozza A (March 2009). "Serum VEGF levels in POEMS syndrome and in immune-mediated neuropathies". Neurology. 72 (11): 1024–6. doi:10.1212/01.wnl.0000344569.13496.ff. PMID 19289745.
  6. Güneş HN, Bilecenoğlu NT, Şener U, Yoldaş TK (April 2015). "POEMS syndrome with peripheral and central nervous system demyelination: case report". Neurologist. 19 (4): 101–3. doi:10.1097/NRL.0000000000000017. PMID 25888197.
  7. "IMWG | International Myeloma Working Group (IMWG) Criteria for the Diagnosis of Multiple Myeloma".
  8. Schreiber AK, Nones CF, Reis RC, Chichorro JG, Cunha JM (April 2015). "Diabetic neuropathic pain: Physiopathology and treatment". World J Diabetes. 6 (3): 432–44. doi:10.4239/wjd.v6.i3.432. PMID 25897354.
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  10. Ekabe CJ, Kehbila J, Abanda MH, Kadia BM, Sama CB, Monekosso GL (January 2017). "Vitamin B12 deficiency neuropathy; a rare diagnosis in young adults: a case report". BMC Res Notes. 10 (1): 72. doi:10.1186/s13104-017-2393-3. PMID 28129784.
  11. Doi T, Kawata T, Tadano N, Iijima T, Maekawa A (February 1989). "Effect of vitamin B12 deficiency on S-adenosylmethionine metabolism in rats". J. Nutr. Sci. Vitaminol. 35 (1): 1–9. PMID 2738712.
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  13. Lindenbaum J, Savage DG, Stabler SP, Allen RH (June 1990). "Diagnosis of cobalamin deficiency: II. Relative sensitivities of serum cobalamin, methylmalonic acid, and total homocysteine concentrations". Am. J. Hematol. 34 (2): 99–107. PMID 2339684.
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  15. Lane LA, Rojas-Fernandez C (2002). "Treatment of vitamin b(12)-deficiency anemia: oral versus parenteral therapy". Ann Pharmacother. 36 (7–8): 1268–72. doi:10.1345/aph.1A122. PMID 12086562.
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