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Lymphoproliferative disorders (LPDs) refer to a specific class of diagnoses, comprising a group of several conditions, in which lymphocytes are produced in excessive quantities. These disorders primarily present in patients who have a compromised immune system .
Criteria for the diagnosis include findings of: a) long term hypereosinophilia (i.e. eosinophil blood counts >1,500/microliter) plus physical findings and symptoms associated with the disease; b) bone marrow analysis showing abnormally high levels of eosinophils; c) elevated serum levels of Immunoglobulin E, other immunoglobulins, and CCL17; d ...
Lymphocytosis is an increase in the number or proportion of lymphocytes in the blood.Absolute lymphocytosis is the condition where there is an increase in the lymphocyte count beyond the normal range while relative lymphocytosis refers to the condition where the proportion of lymphocytes relative to white blood cell count is above the normal range.
Cutaneous lymphoid hyperplasia refers to a groups of benign cutaneous disorders characterized by collections of lymphocytes, macrophages, and dendritic cells in the skin. [2]: 725 Conditions included in this groups are: [2]: 725
Monoclonal B-cell lymphocytosis; Monoclonal gammopathy of undetermined significance; Monoclonal immunoglobulin deposition disease; Monomorphic epitheliotropic intestinal T cell lymphoma; Mosquito bite allergy
Epstein–Barr virus–associated lymphoproliferative diseases (also abbreviated EBV-associated lymphoproliferative diseases or EBV+ LPD) are a group of disorders in which one or more types of lymphoid cells (a type of white blood cell), i.e. B cells, T cells, NK cells, and histiocytic-dendritic cells, are infected with the Epstein–Barr virus (EBV).
Malignant disorders associated with secondary HLH include T-cell lymphoma, B-cell lymphoma, acute lymphocytic leukemia, acute myeloid leukemia, and myelodysplastic syndrome. [ citation needed ] In rheumatic diseases, this syndrome is more often referred to as macrophage activation syndrome (MAS) and occurs most frequently in the juvenile onset ...
Diffuse infiltrative lymphocytosis syndrome; Specialty: Immunology: Symptoms: Parotitis, cervical lymphadenopathy, dry eyes, dry mouth: Diagnostic method: Based on symptoms, confirmation of HIV infection (serology), confirmation of organ infiltration by CD8+ T cells (tissue biopsy), and exclusion of other autoimmune conditions: Differential ...