Blockxiv Lymphoid Neoplasms Untad2011
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Transcript of Blockxiv Lymphoid Neoplasms Untad2011
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Lymphoid Neoplasm
IRIANIWATIDepartment of Pathology GMUSM
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Neoplastic proliferations of white cells
• Lymphoid Neoplasms• Myeloid Neoplasms
- Acute myelogenous leukemia- Myelodysplastic syndromes- Chronic myeloproliferative disorders
• Histiocytosis Langerhans cell hitiocytosis
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Lymphoid Neoplasmsclose to immune regulatory system
• Lymphoid neoplasm are tumors of the immune system disrupt normal immune regulatory mechanisms
• Evidences: susceptibility to infection, autoimmune diseases
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Lymphoid Neoplasmsclose to immune regulatory system
• Patients with inherited or acquired immunodeficiency are at high risk of developing certain lymphoid neoplasm, particularly these associated with EBV infection
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Lymphoid Neoplasms
• All lymphoid neoplasms are derived from single transformed cell monoclonal
• Divided into 2 big groups: - Non Hodgkins Lymphoma (NHL)- Hodgkins Lymphoma (HL)
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Lymphoid Neoplasms
• NHLs often present as involvement of a particular tissue site
• Sensitive molecular assay usually show that the tumor is widely disseminated at the time of diagnosis only systemic therapy are curative
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Lymphoid Neoplasms
• HLs are often presents at a single site spreads methodically to contiguous lymph nodes group
• Early course tumors may be cured with local therapy alone
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Lymphoid Neoplasms• HL spreads in orderly fashion, and as a result
STAGING is of importance in determining therapy
• The spread of NHL is less predictable most patients are assumed to have systemic disease at the time of diagnosis staging in particular NHL provides useful prognosis information, but generally not important in guiding therapy
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E T I O L O G Y• Chromosomal translocation: Chronic Meylocytic Lymphoma
(CML), Burkitt lymphoma• Inherited genetic factors: Bloom syndrome, Fanconi anemia,
ataxia telangiectasia, Down syndrome• Viruses: HTLV-1, EBV, KSHV, HHV-8 • Environmental agents: Helicobacter pylorii (gastric B-cell
lymphoma), gluten-sensitive enteropathy (T-cell lymphoma), HIV (B-cell lymphoma)
• Iatrogenic factors: radiotherapy & chemotherapy mutagenic effect
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Lymphoid NeoplasmsCertain relevant principles must be
emphasized
• Can be suspected from the clinical features, but histological examination of lymph nodes and other involved tissue is required for diagnosis
• The vast majority of lymphoid neoplasm (80% - 85%) are of B-cell origin; most of the remainder being T-cell tumors; only rarely are tumors of NK origin encountered
• Two basic forms of B-cell lymphoma: follicular & diffuse type
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The WHO Classification of the
Lymphoid NeoplasmsI. Precursor B-cell Neoplasms: neoplasms
of immature B-cellsII. Peripheral B-cell Neoplasms: neoplasms
of mature B-cellsIII. Precursor T-cell Neoplasms: neoplasms
of immature T-cellsIV. Peripheral T-cell and NK-cell
Neoplasms: neoplasms of mature T-cell and NK-cell
V. Hodgkin Lymphoma: neoplasms of Reed-Sternberg cells and variants
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Origin of Lymphoid Neoplasms
CLP: common lymphoid precursor; BLB: pre-B lymphoblast; NBC: naive B-cell; MC: mantle B-cell; GC: germinal center B-cell;
MZ: marginal zone B-cell; DN: CD4/CD8 double negative pre-T cell; DP: CD4/CD8 double positive pre-T cell; PTC: peripheral T-cell
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Precursor B & T cell neoplasms
• Acute lymphoblastic Leukemia (ALL): contain of immature cells, precursor B / T cells (lymphoblast)
• 85% arising from precursor B cell childhood acute leukemia
• The less common, from precursor T cell adolescent males lymphoma
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Precursor B & T cells neoplasms
• There is overlap in the clinical behaviour of B & T- ALL.
• B-ALL uncommonly presents as a mass in the skin/ bone and T-ALL presents with leukemic picture
• ALL must be distinguished from CML due to differing response to chemotherapy
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The Classification of the Lymphoid Neoplasms WHO
Precursor B-cell NeoplasmsDiagnosis: precursor B lymphoblastic leukemia/lymphoma
•Asal: sel B prekursor sumsum tulang mengekspresikan TdT
tidak mengandung Ig permukaan•Genotipa:
translokasi kromosom t(12;21), CBFα dan ETV6 rearrangement•Klinis:agresif
predominan pada anak-anak, gejala : pansitopeni
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The WHO Classification of the Lymphoid Neoplasms
III. Precursor T-cell NeoplasmsDiagnosis: precursor T lymphoblastic leukemia/lymphoma
-Asal: prekursor sel T, sering dari timusMengekspresikan TdT
- Genotipa:Translokasi kromosom, lokus reseptor sel TPaling sering rearrangement TAL1
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Acute lymphoblastic leukemia / lymphoma
-Originate from B-cell or T-cell, mostly from T-cell-Can be differed by B-cell marker CD22-The nuclear chromatin is delicate and finely stippled, and nucleoli are either absent or inconspicuous
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The WHO Classification of the Lymphoid Neoplasms
II. Peripheral B-cell Neoplasms• CLL / small lymphocytic lymphoma• B-cell prolymphocytic leukemia• Lymphoplasmacytic lymphoma• Splenic and nodal marginal zone lymphoma• Extranodal marginal zone lymphoma• Mantel cell lymphoma• Follicular lymphoma• Marginal zone lymphoma• Hairy cell leukemia• Plasmacytoma / plasma cell myeloma • Diffuse large B-cell lymphoma• Burkitt lymphoma
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II. Peripheral B-cell Neoplasms Small Lymphocytic LeukemiaSmall Lymphocytic Lymphoma
• The two indistinguishable disorders:- morphologically, phenotypically - genotypically differing in the degree of peripheral blood lymphocytosis
• Proliferation center: loose aggregates of pro-lymphocyte pathognomonic
• Tumor cells usually infiltrate the splenic white and red pulp, and the hepatic portal tract, although the extent of involvement varies widely.
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II. Peripheral B-cell Neoplasms Small Lymphocytic LeukemiaSmall Lymphocytic Lymphoma
Diffuse effacement of nodal architecture The majority of the tumor cells are small round lymphocytes.Arrow: pro-lymphocyte
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II. Peripheral B-cell Neoplasms Follicular Lymphoma
• The most common form of NHL in the USA (45% of adult lymphomas)
• Usually present in the middle age and afflicts males and females equally
• Less common in Europe, and rare in Asian population
• The tumor cells closely resemble normal germinal center B-cells
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II. Peripheral B-cell Neoplasms Follicular Lymphoma
• In most cases, at low magnification, a predominantly nodular or nodular and diffuse growth pattern is observed
• Involvement: bone marrow (85%), spleen, liver
• Te overall median survival is 7 to 9 years, is not improved by aggressive therapy
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II. Peripheral B-cell Neoplasms Follicular Lymphoma
• Two principle cells are observed in varying proportion:(1) small cell with irregular or cleaved nuclear contour and scant cytoplasm centrocyte(2) larger cells with open nuclear chromatin, several nucleoli, and modest amount of cytoplasm centroblast
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Follicular Lymphoma (spleen)
Prominent nodules represent white pulp follicles expanded by follicular lymphoma cells
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Follicular Lymphoma
Malignant lymph follicles are marked by Bcl-2 positive
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Follicular Lymphoma
Small lymphoid cells with condensed chromatin and irregular or cleaved nuclear outline (centrocyte), mixed with a population of
larger cells with nucleoli (centroblast)
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Mantle cell lymphoma
Neoplastic lymphoid cells surround a small, atrophic germinal center exhibiting mantle zone pattern of growth
Homogenous population of small lymphoid cells with somewhat irregular nuclear outlines, condensed chromatin, and scant cytoplasm.
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II. Peripheral B-cell Neoplasms Diffuse large B-cell lymphoma
(DLBCL)• Slight male predominance• Average age about 60 years• 5% of childhood lymphoma• Clinically present with a rapidly
enlarging, often asymptomatic mass, at a single nodal or extranodal site
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Diffuse large B-cell lymphoma
Spleen: typical isolated large mass
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Diffuse large B-cell Lymphoma
Tumor cells show prominent nucleoli
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Diffuse large B-cell lymphoma
Tumor cells with large nuclei, open chromatin, and prominent nucleoli
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II. Peripheral B-cell Neoplasms Burkitt lymphoma
• Categories: (1) African (endemic) Burkitt lymphoma, (2) sporadic (non-endemic), (3) a subset of aggressive lymphoma occuring in individual with HIV infection
• Responds well to short-term, high dose chemotherapy (children & young adults)
• Clinical featureBoth endemic & non-endemic are found largely in children and young adults (30%)
• Most tumor manifests at extra-nodal sites
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Burkitt lymphoma
Low power: many tingible body macrophages Starry sky appearance
Monotonous appearance, tumor cells with multiple small nucleoli and high mitotic index (typical)
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Burkitt Lymphoma
Several starry sky macrophages was shown (arrows)
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II. Peripheral B-cell Neoplasms Multiple myeloma of the skull
The sharply punched-out bone lesions are most obvious in the calvarium
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Multiple myeloma (bone aspirate)
Normal marrow cells are replaced by plasma cells
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Lymphoplasmacytic lymphoma
Bone marrow biopsy: various degrees of plasma cell differentiationMast cell
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The WHO Classification of the Lymphoid Neoplasms
IV. Peripheral T&NK-cell Neoplasms• T-cell prolymhocytic leukemia • Large granular lymhocytic leukemia• Mycosis fungoides / Sezary syndrome• Peripheral T-cell lymphoma, unspecified• Anaplastic large cell lymphoma • Angioimmunoblastic T-cell lymphoma• Enteropathy-associated T-cell lymphoma• Panniculitis-like T-cell lymphoma• Hepatosplenic γδ T-cell lymphoma• Adult T-cell leukemia/Lymphoma• NK/T-cell lymphoma, nasal type• NK-cell leukemia
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IV. Peripheral T&NK-cell Lymphoma
Peripheral T-cell lymphoma
• T-cell lymphoma without specific defining features fall collectively into the category of “unspecified”
• Account for approximately half of all T-cell lymphoma in the western world
• As a group they are aggressive malignant with low 5-yrs• They may be nodal or extra nodal• Variable expression most nodal expressing CD4+• They may be associated with eosinophilia
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IV. Peripheral T&NK-cell Lymphoma
Peripheral T-cell lymphoma
A spectrum of small, intermediate, and large lymphoid cells, many with irregular nuclear contours.
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IV. Peripheral T&NK-cell Lymphoma
Anaplastic large cell lymphoma
mitosis
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Anaplastic large cell lymphoma
“Hallmark” cells with horseshoe-like or “embryo –like” nuclei and abundant cytoplasma lie near the center of the field.
IHC: ALK protein
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IV. The WHO Classification of the Lymphoid Neoplasms
V. Hodgkin Lymphoma
• Classical subtypeNodular sclerosisMixed cellularityLymphocyte-richLymphocyte depletion
• Lymphocyte pre-dominance
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V. Hodgkin Lymphoma: KLINIS• Manifes sebagai benjolan periferal, tidak sakit,
mengenai satu atau lebih limfonodi• Penyebaran dapat diperkirakan (lewat saluran
limfe aferen dan eferen)• Pada penyebaran lanjut makin sulit diprediksi
karena mulai ada penyebaran hematogen• Simtom konstitusional (40%): demam ringan
(kadang siklik), berkeringat malam, penurunan berat badan (10% dari bb), pruritus, sakit pada daerah tumor sesudah minum alkohol
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V. Hodgkin Lymphoma: KLINIS• Karakteristik: defisiensi fungsi sel T• Disfungsi imunitas ini dapat diperberat
dengan pemberian obat-obat imunosupresan
• Pada 50% kasus ditemukan limfositopeni absolut
• Imunitas humoral masih ada sampai akhir
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Urut-urutan frekwensi lokasi
1. Cervical & mediastinal (anterior – nodular sclerosis type)
2. Axillar, inguinal, retroperitoneal3. Antecubital, Popliteal, mesenterik
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V. Hodgkin Lymphoma
Lymphocyte predomi-Nant, (paling lembut). Umur <35th. L:P=4:1
Mixed cellularity, dekade 4-5.Cure rate 75%
Lymphocyte rich
Lymphocyte depleted. Paling agresif.
Nodular sclerosis. Paling banyak, dengan prognosis baik. Cure rate 80-85%
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V. Hodgkin Lymphoma
Reed-Sternberg cell, positive for CD30
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V. Hodgkin Lymphoma
Reed-Sternberg cell (HE stained)Mirror-image nuclei contain large eosinophilic nucleoli
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Reed-Sternberg cells and variantsA. Diagnostic RS-cells with 2 nuclear lobes, large inclusion-
like nucleoli, and abundant cytoplasmB. Mononuclear variant. C. Lacunar variant, characteristic of the nodular sclerosis
subtype. It has a folded or multilobated nucleus lying within a clear space created by disruption of its cytoplasm during processing
D. Lymphohistiocytic (L&H) variant, complex nuclear irregularities, small nucleoli, fine chromatin, and abundant pale cytoplasm.
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Hodgkin lymphoma (Reed-Sternberg cells and variants)
A B
C D
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Hodgkin lymphoma:nodular sclerosis type
Well-defined bands of pink, acellular collagen that subdivided the tumor cells and associated reactive infiltrate into nodules
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Hodgkin lymphoma:mixed cellularity type
Numerous mature-looking lymphocytes surround scattered, large pale-staining L&H variants (“popcorn” cells)
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Hodgkin lymphomalymphocytic predominance type
Reed-Sternberg cells is surrounded by reactive cells, including eosinophils
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Ann Arbor Staging SystemStage I
A/BI
IE
Involvement of a single lymph node regionorA single extra lymphatic organ or site
Stage IIA/B
II
IIE
Involvement of 2 or more lymph node regions on the same side of the diaphragm, orWith localized contiguous involvement of an extra lymphatic organ or site
Stage IIIA/B
III
IIIE
IIISIIIES
Involvement of lymph node regions of both sites of the diaphragmOr, with localized contiguous involvement of an extra lymphatic organ or site, orWith involvement of spleen, or both extra lymphatic organ or site and spleen involvement
Stage IVA/B
IV Diffuse or disseminated involvement of one or more extra lymphatic organs with or without associated lymph node involvement
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References • Rubin’s Pathology. Clinical Foundations of
Medicine, 2005. Emanuel Rubin cs; Lippincott Williams & Wilkins.
• Robbin’s Pathologic Bases of Medicine, 2005. Cotran, Kumar, Collins. Saunders
• Pathology, 2nd ed. 2002. Arthur S. Schneider, Philip A. Szanto; Lippinctt Williams & Wilkins