Multiple Myeloma and Amylodosis Multiple Myeloma and Amylodosis By By Dr. Fatin Al-Sayes, MSC and Dr. Fatin Al-Sayes, MSC and FRCPath FRCPath Vice Chairman Hematology Vice Chairman Hematology Department Department Consultant Hematologist Consultant Hematologist Associate Professor Associate Professor King Abdulaziz University Hospital King Abdulaziz University Hospital Jeddah, K.S.A. Jeddah, K.S.A.
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Multiple Myeloma and AmylodosisMultiple Myeloma and Amylodosis
ByBy
Dr. Fatin Al-Sayes, MSC and FRCPathDr. Fatin Al-Sayes, MSC and FRCPath
Vice Chairman Hematology DepartmentVice Chairman Hematology Department
Consultant HematologistConsultant Hematologist
Associate ProfessorAssociate Professor
King Abdulaziz University HospitalKing Abdulaziz University Hospital
Jeddah, K.S.A.Jeddah, K.S.A.
Multiple MyelomaMultiple Myeloma
● ● Definition: Definition:
ββ-cell malignancy characterised by neoplastic -cell malignancy characterised by neoplastic abnormal proliferation of cells able to produce a abnormal proliferation of cells able to produce a monoclonal immunoglobulin (M protein)monoclonal immunoglobulin (M protein)
●● Incidence:Incidence: - - 3 – 9 cases per 1000000 population / year, second most 3 – 9 cases per 1000000 population / year, second most
prevalent blood cancer prevalent blood cancer
approximately 9% of all cancer deaths.approximately 9% of all cancer deaths.
Clinical manifestation are related to malignant behavior of plasma cells and Clinical manifestation are related to malignant behavior of plasma cells and abnormalities produced by M proteinabnormalities produced by M protein
- - is seen in 99% of cases in serum and/or urine IgG>50%, IgA 20-25%, IgE I IgD 1-3%is seen in 99% of cases in serum and/or urine IgG>50%, IgA 20-25%, IgE I IgD 1-3%
light chain 20%light chain 20%
- 1% of cases are nonsecretory- 1% of cases are nonsecretory
Diagnostic Criteria for MultipleDiagnostic Criteria for Multiple
Major CriteriaMajor Criteria
I. Plasmacytoma on tissues biopsyI. Plasmacytoma on tissues biopsy II. Bone marrow plasma cell >(10%)II. Bone marrow plasma cell >(10%) III. Monoclonal spike on electrophoresis IgG>3.5g/dl, IgA>2g/dl, light chainIII. Monoclonal spike on electrophoresis IgG>3.5g/dl, IgA>2g/dl, light chain
>1g/dl in 24 h urine sample>1g/dl in 24 h urine sample
Minor CriteriaMinor Criteria
a. Bone marrow plasma cells less <10%a. Bone marrow plasma cells less <10%b. M spike but less than aboveb. M spike but less than abovec. Lytic bone lesionsc. Lytic bone lesionsd. Normal IgM<50mg.IgA<100mg. IgG<600mg/dld. Normal IgM<50mg.IgA<100mg. IgG<600mg/dl
What Causes Myeloma Cells to GrowWhat Causes Myeloma Cells to Grow??
- Growth factors that promote angiogenesis- Growth factors that promote angiogenesis
- Inactivated immune system- Inactivated immune system
Staging of Multiple MyelomaStaging of Multiple Myeloma
Clinical StagingClinical Staging
● ● is based on level of haemoglobin, serum calcium, immunoglobulins and presence or is based on level of haemoglobin, serum calcium, immunoglobulins and presence or
not of lytic bone lesionsnot of lytic bone lesions
● ● correlates with myeloma burden and prognosiscorrelates with myeloma burden and prognosis
I. Low tumor massI. Low tumor mass
II. Intermediate tumor massII. Intermediate tumor mass
III. High tumor massIII. High tumor mass
● ● subclassificationsubclassification
A – creatinine <2mg/dlA – creatinine <2mg/dl
B - creatinine >2mg/dlB - creatinine >2mg/dl
Multiple MyelomaMultiple Myeloma
Poor Prognosis FactorsPoor Prognosis Factors
● ● cytogenetical abnormalities of 11 and 13 chromosomescytogenetical abnormalities of 11 and 13 chromosomes
↓ ↓ bone pain improve quality of life.bone pain improve quality of life. - risks include- risks include
? Osteonocrosis of the jaw renal functions defect? Osteonocrosis of the jaw renal functions defect- recombinant erythropoietin- recombinant erythropoietin
Monoclonal gammopathy of undetermined Monoclonal gammopathy of undetermined significance (MGUS)significance (MGUS)
● ● M proteinM protein
- 3% of people > 70 years- 3% of people > 70 years
- 15% of people > 90 years- 15% of people > 90 years
- MGUS is diagnosed in 67% of patients with an M protein- MGUS is diagnosed in 67% of patients with an M protein
- 10% of patients with MGUS develop multiple myeloma- 10% of patients with MGUS develop multiple myeloma
AmyloidosisAmyloidosis
- Homogenous protein deposit in tissues - Homogenous protein deposit in tissues stain pink with haematoxylin and red stain pink with haematoxylin and red with congo red and has green with congo red and has green
birefringence.birefringence.
- It has fibrillary structure. - It has fibrillary structure.
______________________________________________________________________________________________________________Classification of AmylodiosisClassification of Amylodiosis
Type Chemical nature Organs involveType Chemical nature Organs involve______________________________________________________________________________________________________________Immunocyte-relatedImmunocyte-related
Myeloma Ig light chains and/or TongueMyeloma Ig light chains and/or TongueWaldenstrom’s parts of their Skin Waldenstrom’s parts of their Skin macroglobulianemia variable regions Heartmacroglobulianemia variable regions HeartHeavy-chain disease (AL) NervesHeavy-chain disease (AL) NervesPrimary amyloidosis Connective tissuePrimary amyloidosis Connective tissue Kidneys Kidneys LiverLiver
SpleenSpleenReactive systemicReactive systemicRheumatoid arthritis Protein A (acute LiverRheumatoid arthritis Protein A (acute LiverTuberculosis reactive, AA) SpleenTuberculosis reactive, AA) SpleenBronchiectasis Bronchiectasis Kidneys KidneysChronic osteomyetitis Bone marrowChronic osteomyetitis Bone marrowHodgkin’s diseaseHodgkin’s diseaseCarcinomasCarcinomasFamilial Mediterranean feverFamilial Mediterranean fever
LocalizedLocalizedInvolvement of a single Hormones EndocrineInvolvement of a single Hormones Endocrine organ Protein A with other tumoursorgan Protein A with other tumours constituents constituents Skin Skin