| Angioimmunoblastic T-cell lymphoma |
| Classification and external resources |
| ICD-10 |
C84.4 (ILDS C84.460) |
| ICD-O: |
9705/3[1] |
| MeSH |
D007119 |
Angioimmunoblastic T-cell lymphoma (AITL, sometimes misspelled AILT) (also known as "Angioimmunoblastic lymphadenopathy with dysproteinemia"[2]:747) is a mature T-cell lymphoma of blood or lymph vessel immunoblasts characterized by a polymorphous lymph node infiltrate showing a marked increase in follicular dendritic cells (FDCs) and high endothelial venules (HEVs) and systemic involvement.[1] It is also known as immunoblastic lymphadenopathy (Lukes-Collins Classification) and AILD-type (lymphogranulomatosis X) T-cell lymphoma (Kiel Classification)[1]
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Contents
- 1 Epidemiology
- 2 Clinical features
- 2.1 Etiology
- 2.2 Clinical presentation
- 2.3 Laboratory findings
- 2.4 Sites of involvement
- 3 Morphology
- 4 Molecular findings
- 4.1 Immunophenotype
- 4.2 Genetic findings
- 5 See also
- 6 References
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Epidemiology
The typical patient with angioimmunoblastic T-cell lymphoma (AILT) is either middle-aged or elderly, and no gender preference for this disease has been observed.[1] AILT comprises 15-20% of peripheral T-cell lymphomas and 1-2% of all non-Hodgkin lymphomas.[3]
Clinical features
Etiology
This disease was originally thought to be a premalignant condition, termed angioimmunoblastic lymphadenopathy, and this atypical reactive lymphadenopathy carried a risk for transformation into a lymphoma. Currently, it is postulated that the originating cell for this disease is a mature (post-thymic) CD4+ T-cell that arises de novo,[1] although some researchers argue that there is a premalignant subtype of this disease.[4][5] The Epstein–Barr virus (EBV) is observed in the majority of cases,[1] and the virus has been found in the reactive B-cells that comprise part of the polymorphous infiltrate of this disease[6] and in the neoplastic T-cells.[7] Immunodeficiency is also seen with this disease, but it is a sequela to the condition and not a predisposing factor.[1]
Clinical presentation
Patients with this disease usually present at an advanced stage and show systemic involvement. The clinical findings typically include a pruritic skin rash and possibly edema, ascites, pleural effusions, and arthritis.[8][9]
Laboratory findings
The classical laboratory finding is polyclonal hypergammaglobulinemia, and other immunoglobulin derangements are also seen, including hemolytic anemia with cold agglutinins, circulating immune complexes, anti-smooth muscle antibodies, and positive rheumatoid factor.[1][8]
Sites of involvement
Due to the systemic nature of this disease, neoplastic cells can be found in lymph nodes, liver, spleen, skin, and bone marrow.
Morphology
Lymph node
The normal architecture of a lymph node is partially effaced by a polymorphous infiltrate and residual follicles are commonly seen. The polymorphous infiltrate consists of lymphocytes of moderate size with pale/clear cytoplasm and smaller reactive lymphocytes, eosinophils, histiocytes, plasma cells, and follicular dendritic cells. In addition, blast-like B-cells are occasionally seen. A classic morphological finding is the aborization and proliferation of high endothelial venules.[1] Hyperplastic germinal centers and Reed-Sternberg cells can also be seen.[10][11]
Molecular findings
Immunophenotype
AILT typically has the phenotype of a mixture of CD4+ and CD8+ T-cells, with a CD4:CD8 ratio greater than unity. Polyclonal plasma cells and CD21+ follicular dendritic cells are also seen.[1]
Genetic findings
Clonal T-cell receptor gene rearrangements are detected in 75% of cases,[12] and immunoglobin gene rearrangements are seen in 10% of cases, and these cases are believed to be due to expanded EBV-driven B-cell populations.[13] Similarly, EBV-related sequences can be detected most cases, usually in B-cells but occasionally in T-cells.[6][7] Trisomy 3, trisomy 5, and +X are the most frequent chromosomal abnormalities found in cases.[14] [15]
See also
- Rosai-Dorfman disease
- Immunoblast
- List of hematologic conditions
References
- ^ a b c d e f g h i j [1] Jaffe E.S., Harris N.L., Stein H., Vardiman J.W. (eds): World Health Organization Classification of Tumors. Pathology and Genetics of Tumours of Haemopoietic and Lymphoid Tissues. IARC Press: Lyon 2001
- ^ James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.
- ^ "A clinical evaluation of the International Lymphoma Study Group classification of non-Hodgkin's lymphoma. The Non-Hodgkin's Lymphoma Classification Project". Blood 89 (11): 3909–18. June 1997. PMID 9166827.
- ^ Frizzera G, Kaneko Y, Sakurai M (January 1989). "Angioimmunoblastic lymphadenopathy and related disorders: a retrospective look in search of definitions". Leukemia 3 (1): 1–5. PMID 2642571.
- ^ Smith JL, Hodges E, Quin CT, McCarthy KP, Wright DH (February 2000). "Frequent T and B Cell Oligoclones in Histologically and Immunophenotypically Characterized Angioimmunoblastic Lymphadenopathy". Am. J. Pathol. 156 (2): 661–9. doi:10.1016/S0002-9440(10)64770-0. PMC 1850038. PMID 10666395. //www.ncbi.nlm.nih.gov/pmc/articles/PMC1850038/.
- ^ a b Weiss LM, Jaffe ES, Liu XF, Chen YY, Shibata D, Medeiros LJ (April 1992). "Detection and localization of Epstein-Barr viral genomes in angioimmunoblastic lymphadenopathy and angioimmunoblastic lymphadenopathy-like lymphoma". Blood 79 (7): 1789–95. PMID 1373088.
- ^ a b Anagnostopoulos I, Hummel M, Finn T, et al. (October 1992). "Heterogeneous Epstein-Barr virus infection patterns in peripheral T-cell lymphoma of angioimmunoblastic lymphadenopathy type". Blood 80 (7): 1804–12. PMID 1327284.
- ^ a b Siegert W, Nerl C, Agthe A, et al. (September 1995). "Angioimmunoblastic lymphadenopathy (AILD)-type T-cell lymphoma: prognostic impact of clinical observations and laboratory findings at presentation. The Kiel Lymphoma Study Group". Ann. Oncol. 6 (7): 659–64. PMID 8664186.
- ^ Jaffe ES (September 1995). "Angioimmunoblastic T-cell lymphoma: new insights, but the clinical challenge remains". Ann. Oncol. 6 (7): 631–2. PMID 8664181.
- ^ Quintanilla-Martinez L, Fend F, Moguel LR, et al. (October 1999). "Peripheral T-cell lymphoma with Reed-Sternberg-like cells of B-cell phenotype and genotype associated with Epstein-Barr virus infection". Am. J. Surg. Pathol. 23 (10): 1233–40. doi:10.1097/00000478-199910000-00008. PMID 10524524.
- ^ Ree HJ, Kadin ME, Kikuchi M, et al. (June 1998). "Angioimmunoblastic lymphoma (AILD-type T-cell lymphoma) with hyperplastic germinal centers". Am. J. Surg. Pathol. 22 (6): 643–55. doi:10.1097/00000478-199806000-00001. PMID 9630171.
- ^ Feller AC, Griesser H, Schilling CV, et al. (December 1988). "Clonal gene rearrangement patterns correlate with immunophenotype and clinical parameters in patients with angioimmunoblastic lymphadenopathy". Am. J. Pathol. 133 (3): 549–56. PMC 1880823. PMID 2849301. //www.ncbi.nlm.nih.gov/pmc/articles/PMC1880823/.
- ^ Lipford EH, Smith HR, Pittaluga S, Jaffe ES, Steinberg AD, Cossman J (February 1987). "Clonality of angioimmunoblastic lymphadenopathy and implications for its evolution to malignant lymphoma". J. Clin. Invest. 79 (2): 637–42. doi:10.1172/JCI112860. PMC 424152. PMID 3805286. //www.ncbi.nlm.nih.gov/pmc/articles/PMC424152/.
- ^ Kaneko Y, Maseki N, Sakurai M, et al. (August 1988). "Characteristic karyotypic pattern in T-cell lymphoproliferative disorders with reactive "angioimmunoblastic lymphadenopathy with dysproteinemia-type" features". Blood 72 (2): 413–21. PMID 3261178.
- ^ Schlegelberger B, Zhang Y, Weber-Matthiesen K, Grote W (October 1994). "Detection of aberrant clones in nearly all cases of angioimmunoblastic lymphadenopathy with dysproteinemia-type T-cell lymphoma by combined interphase and metaphase cytogenetics". Blood 84 (8): 2640–8. PMID 7919378.
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Hematological malignancy/leukemia histology (ICD-O 9590–9989, C81–C96, 200–208)
Lymphoid/Lymphoproliferative, Lymphomas/Lymphoid leukemias (9590–9739, 9800–9839)
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B cell
(lymphoma,
leukemia)
(most CD19
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By development/
marker
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TdT+
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- ALL (Precursor B acute lymphoblastic leukemia/lymphoma)
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CD5+
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mantle zone (Mantle cell)
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CD22+
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- Prolymphocytic
- CD11c+ (Hairy cell leukemia)
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CD79a+
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- germinal center/follicular B cell (Follicular
- Burkitt's
- GCB DLBCL
- Primary cutaneous follicular lymphoma)
marginal zone/marginal-zone B cell (Splenic marginal zone
- MALT
- Nodal marginal zone
- Primary cutaneous marginal zone lymphoma)
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RS (CD15+, CD30+)
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- Classic Hodgkin's lymphoma (Nodular sclerosis)
- CD20+ (Nodular lymphocyte predominant Hodgkin's lymphoma)
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PCDs/PP
(CD38+/CD138+)
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- see immunoproliferative immunoglobulin disorders
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By infection
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- KSHV (Primary effusion)
- EBV (Lymphomatoid granulomatosis
- Post-transplant lymphoproliferative disorder)
- HIV (AIDS-related lymphoma)
- Helicobacter pylori (MALT lymphoma)
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Cutaneous
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- Diffuse large B-cell lymphoma
- Intravascular large B-cell lymphoma
- Primary cutaneous marginal zone lymphoma
- Primary cutaneous immunocytoma
- Plasmacytoma
- Plasmacytosis
- Primary cutaneous follicular lymphoma
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T/NK
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T cell
(lymphoma,
leukemia)
(most CD3
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By development/
marker
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- TdT+: ALL (Precursor T acute lymphoblastic leukemia/lymphoma)
- prolymphocyte (Prolymphocytic)
- CD30+ (Anaplastic large-cell lymphoma
- Lymphomatoid papulosis type A)
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Cutaneous
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MF+variants
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- indolent: Mycosis fungoides
- Pagetoid reticulosis
- Granulomatous slack skin
aggressive: Sézary's disease
- Adult T-cell leukemia/lymphoma
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Non-MF
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- CD30-: Non-mycosis fungoides CD30− cutaneous large T-cell lymphoma
- Pleomorphic T-cell lymphoma
- Lymphomatoid papulosis type B
CD30+: CD30+ cutaneous T-cell lymphoma
- Secondary cutaneous CD30+ large cell lymphoma
- Lymphomatoid papulosis type A
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Other peripheral
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- Hepatosplenic
- Angioimmunoblastic
- Enteropathy-associated T-cell lymphoma
- Peripheral T-cell lymphoma-Not-Otherwise-Specified (Lennert lymphoma)
- Subcutaneous T-cell lymphoma
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By infection
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- HTLV-1 (Adult T-cell leukemia/lymphoma)
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NK cell/
(most CD56)
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- Aggressive NK-cell leukemia
- Blastic NK cell lymphoma
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T or NK
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- EBV (Extranodal NK-T-cell lymphoma/Angiocentric lymphoma)
- Large granular lymphocytic leukemia
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Lymphoid+myeloid
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- Acute biphenotypic leukaemia
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Lymphocytosis
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- Lymphoproliferative disorders (X-linked lymphoproliferative disease
- Autoimmune lymphoproliferative syndrome)
- Leukemoid reaction
- Diffuse infiltrative lymphocytosis syndrome
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| Cutaneous lymphoid hyperplasia |
- Cutaneous lymphoid hyperplasia with bandlike and perivascular patterns
- Cutaneous lymphoid hyperplasia with nodular pattern
- Jessner lymphocytic infiltrate of the skin
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cell/phys/auag/auab/comp, igrc
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